The Alcatraz Escape

The third installment in the Book Scavenger series follows Emily Crane and her best friend, James Lee, as they compete in an escape-room-style game on Alcatraz Island, where a famous author's mystery turns out to be far more real than anyone expected.

Errol Roy, a celebrated but fiercely reclusive mystery novelist whose face is unknown to the public, gazes at Alcatraz Island from his San Francisco apartment. He reflects on his favorite of his own novels, A Body in the Alley, and its closing image of a crook sailing into the sunset. Knowing that Garrison Griswold, a beloved local book publisher and game creator, is planning an event called Unlock the Rock on Alcatraz, Roy decides it is time to tell one last story, acknowledging there will be considerable risk.

Emily and James celebrate James's birthday with friends, including the competitive Maddie, the loyal Nisha, and Emily's older brother, Matthew. They discuss Unlock the Rock, a fundraiser for Hollister's bookstore, a neighborhood shop forced to close temporarily after a fire. To participate, each player in Book Scavenger, the online book-hunting puzzle game the friends all play, must solve a unique entry puzzle. James has already solved his, but Emily hides the fact that she has failed her first attempt. Her second try also proves incorrect, leaving her one final chance.

Roy visits Griswold's offices unannounced and proposes inserting his own mystery into the event, requesting that he appear in person and that the story's details remain secret. Griswold agrees but warns that going public may change Roy's private life forever.

Desperate for a backup plan, Emily hunts for golden tickets Griswold has hidden across the Bay Area but comes away empty-handed twice, giving up the second ticket to a young girl who is searching for the same prize. Emily's breakthrough comes after attending an author talk by Lucy Leonard, whose bestselling novel The Twain Conspiracy is a favorite of Emily's mother. Leonard tells the audience to take the leap despite fear of failure: "You just have to go for it." Inspired, Emily re-examines her puzzle, discovers that each image contains subtle visual variations that change its numerical value, and earns her entry.

On the day of the event, Emily's group solves a qualifying puzzle at Pier 33 and boards the ferry. An unnamed woman helps their team, and Emily finds her oddly familiar. Tensions mount: Emily and James had earlier found anonymous threatening notes made of magazine cutout letters in their school lockers, and now Emily discovers another in her backpack reading "YOU SHOULD NOT BE HERE." Fiona Duncan, a dramatic teenager who attends Matthew's school, announces her charm bracelet has gone missing. On Alcatraz, a tram carrying contestants crashes after the driver swerves to avoid debris. Roy finds a scrap of paper near his foot reading "I WARNED YOU" and pockets it, deeply unsettled.

Inside the prison dining hall, Griswold introduces the game and then Errol Roy, who steps onstage to thunderous cheers. Roy announces his mystery involves four puzzles to identify an escaped prisoner, and if someone solves it by 8 p.m., he will donate $100,000 to Hollister's bookstore. A theatrical lockdown siren sounds, and Roy reads the first clue from an index card: "I know your secret." He reacts with alarm, insisting the card has been switched, and storms out. Hollister rallies the confused contestants.

Emily's group begins solving puzzles. Matthew notices that clocks throughout the prison are stopped at different times and hypothesizes they form a coded message. Using semaphore, a flag-signaling system in which arm positions represent letters, the group interprets the clock hands and arranges the results by location on a floor plan. The decoded message reads: "Follow Anglin and Morris," a reference to Clarence and John Anglin and Frank Morris, the three inmates who famously escaped Alcatraz in 1962 by tunneling through their cell walls and launching a raft into the bay. Following the escape route, the group solves additional puzzles. Their cumulative solutions spell "IS YOUR MAN," clearly missing a first word.

Trouble escalates on multiple fronts. Roy catches Matthew examining papers in an administration office. Fiona and her mother accuse Matthew of theft, and when Matthew empties his pockets, Fiona's bracelet dangles from his fingers. Emily hesitates before speaking up, and Matthew misreads her pause as doubt. Separately, Bookacuda, an arrogant young player who is the youngest to reach Book Scavenger's top Sherlock level, submits "Anglin and Morris" as the solution, but Roy declares it wrong. Bookacuda's friends confess that he orchestrated the threatening notes, stole Maddie's backpack to plant a message, and sabotaged other players. Hollister disqualifies the trio.

During the game, Emily recognizes the unnamed woman from Pier 33 as Lucy Leonard after spotting her author photo in a copy of The Twain Conspiracy in the prison library. When Emily notices Lucy slipping toward the cellblocks, she follows her into the restricted A-Block area. A loud clang signals that someone has shut the cage gate behind her; she glimpses Fiona walking away. Trapped, Emily descends into the dungeon beneath the prison, the remnants of the original military citadel built on Alcatraz in the 1800s. She encounters Lucy, who explains she came to search the tunnels for evidence about Harriet Beecher Stowe's son, Frederick, who disappeared in San Francisco in 1871. Unable to exit through the locked gate, Lucy navigates the tunnels to a hatch beneath the old Alcatraz morgue. Emily hammers on the morgue door using the rhythmic knock she and James share; James recognizes the pattern, and Matthew picks the lock to free them.

Rejoining the game, Emily learns that Fiona confessed to planting the bracelet in Matthew's pocket under pressure from her mother, who hoped to impress Errol Roy. Both have been removed from the game. The group retrieves a final puzzle from the dining hall, a math-image sheet connected to an earlier tip that ordering a roast beef sandwich from the food counter would yield a clue. However, Matthew recalls that Roy's opening statement contained a deliberate misspelling of "some" as "sum," signaling that math puzzles are red herrings. Emily proposes that Roy's first clue, "I KNOW YOUR SECRET," was not actually wrong: Certain letters on the card are printed differently, and the distinct letters O, Y, and R spell "ROY." The full solution is "ROY IS YOUR MAN."

Before they can submit their answer, Mr. Quisling, Emily's teacher, and his girlfriend, Miss Linden, a research librarian, arrive with the same solution. Hollister searches for Roy but returns with only an envelope. Griswold reads Roy's letter aloud: Roy confesses that he was born Clarence Anglin, inmate #1485, one of the three men who escaped Alcatraz in 1962. His brother John and Frank Morris did not survive the bay crossing, but he did. Reading books gave him a second life, and inspired by Dashiell Hammett, he began writing mysteries, eventually returning to the United States under the name Errol Roy. Unable to face prison at his advanced age, he has disappeared once again, leaving $100,000 for Hollister's bookstore and the rest of his wealth to the American Library Association for prison literacy programs. Roy sails his catamaran away from Alcatraz under a cloudy night sky, heading toward the Golden Gate Bridge and the open ocean, echoing the image of freedom from A Body in the Alley.

The following Sunday, Emily, James, and their families gather at Hollister's newly rebuilt bookstore for its grand reopening. James wrestles with his complicated feelings about loving Roy's books while grappling with the author's criminal past. Hollister gives a speech thanking the community and encouraging everyone to believe more people are rooting for them to succeed than hoping they fail. Emily and James settle into the store's reading loft with a puzzle book. When Matthew reads them the clue "When a mystery is solved (two words)," they answer in unison: "Case closed."