Phoebe is a 13-year-old free Black girl living in 1770s New York City. She works alongside her father at his tavern, The Queen's Head, managing daily chores and serving guests. When her father asks her to move to Mortier House as a housekeeper to uncover a plot against the Patriot leadership, she accepts the heavy responsibility despite intense homesickness. Her youth and position as a servant allow her to move through the house largely unnoticed.

Sam is a middle-aged free Black man who owns and operates The Queen's Head tavern in New York City. He holds strong principles and supports American independence, making his establishment a safe gathering place for Patriot leaders. Working quietly as a tavern host, he frequently overhears sensitive political gossip from customers who underestimate him.

General Washington is the quiet, intelligent leader of the Continental Army preparing his forces for conflict with Great Britain. He establishes his headquarters at Mortier House in New York City, drawing soldiers, politicians, and potential threats into his immediate orbit. He remains a stoic presence who relies heavily on his bodyguards and domestic staff for his daily needs and security.

Mr. Hickey is a young soldier assigned as one of General Washington's bodyguards at Mortier House. He stands out from the rest of the military men due to his talkative and approachable personality. He takes an active interest in the household staff, frequently chatting with Phoebe and bringing her small gifts he claims to have confiscated from Loyalist supporters.

Mr. Green serves as a soldier and bodyguard for General Washington at Mortier House. He maintains a harsh, grumpy demeanor and keeps entirely to himself. He completely ignores the household staff and rarely speaks even to his fellow soldiers during meals, casting a mysterious atmosphere around his actions.

Mary is a tall, hardworking woman employed as the primary cook at Mortier House. She lives on the premises with her young son and manages the busy kitchen that feeds the commander and his retinue. Though initially skeptical that a young girl can manage the house cleaning alone, she treats her new coworker kindly.

Pompey is Mary's young son who lives with her at Mortier House. He assists around the property and runs errands for the busy staff while the Continental Army leadership occupies the residence.

Mrs. Washington is the wife of the general, residing with him at Mortier House during the spring of 1776. She relies on the newly expanded domestic staff to maintain the household while her husband focuses on the impending war.