They take him to the station and wait outside the interview room. He is thin, in his late twenties, and appears to be middle class. Scorcher suggests that he’d been patient in stalking the Spains and something must have happened to push him to the murder. Scorcher also observes that the man seems to feel very connected to the family.

Richie goes into the interview room first. The suspect introduces himself as Conor Brennan, and they make small talk. Scorcher, watching through the one-way mirror, is impressed with Richie’s ability to put a suspect at ease. Scorcher enters and begins the interrogation, pretending that Conor is only there to talk about the breaking and entering. He implies that if Connor can provide information on the murder, they’ll let him go.

Scorcher asks that the Spains were like, and Conor makes a speech about their happy marriage and life. He describes Emma and Jack as “sweet kids” and speaks about them gently. Scorcher asks Conor about his use of past tense and whether something changed, and Conor answers that Pat lost his job. They discuss the recession and its impact on Conor’s freelance work as a web designer.

When they ask Conor where he was on the night of the murder, he stops talking. They leave to regroup and discuss Conor. Richie says he looks familiar, while Scorcher comments that Connor seems to believe he loves the Spains, and that will be the key to his downfall. When they go back in, Scorcher fakes a call from the hospital, suggesting that it’s good news. Conor is desperate to know who is alive. They tell him it’s Jenny.

Scorcher tells Conor that he understands that he loved the Spains. He says that if Conor doesn’t tell them what happened, Scorcher will make Jenny tell them. Conor finally confesses to the murders but doesn’t say why. He agrees to sign a statement and gives a few more details about previous break-ins and the murder weapon, which he says he threw into the ocean. However, he isn’t as forthcoming with information as Scorcher would have expected at this stage.

After they leave the room, Richie asks Scorcher if he’s sure they’ve got the right guy. He finds Conor’s confession strange and insists that something was going on inside the house before the murder. Richie insists that they should keep investigating Pat Spain. Scorcher reluctantly agrees that they can conduct a parallel investigation into Pat Spain.

The computer tech calls and tells Scorcher that he found a record of Pat participating in a wildlife forum board, asking for advice on a small animal he thought had entered his home. Based on the replies, it doesn’t seem likely that an animal made the holes in the walls. Richie is intrigued and suggests that Pat may have been mentally unstable.

Next, they go to Conor’s apartment and find a number of objects taken from the Spains’ house. Richie suddenly remembers why Conor looked familiar: He is in a photo they found in Emma’s room, and he is Emma’s godfather. Since Fiona was her godmother and also pictured, they ask her to come in for an interview. She agrees to come to the Dublin Castle HQ in a few hours.

In the meantime, they decide to go back to Brianstown to speak to the neighbors again. Larry calls with results from the search of Conor’s car. He reports that they found keys, including one to the Spains’ back door, as well as blood, hair, fibers, and dirt.

As they’re about to leave Conor’s flat, Scorcher notices that Richie is acting strange, but he tells Scorcher that it’s nothing. Retrospectively, Scorcher realizes that this was a turning point and a key misstep in the case because he knew Richie was lying to him.

Richie and Scorcher drive to Brianstown. They meet a wildlife expert, who tells them he suspects something from the mustelid family, like a stoat or mink, was in the attic and killed the robin from the backyard. Richie is skeptical and is still acting strangely.

They go back to the neighbors’ house and talk to the son, Jaden, who seemed to be hiding something during the first interview. He eventually tells them he sneaked into number 11, the house next to the Spains’ house, earlier in the summer, and he met a man there. Jaden had been trying his back door key on other houses and found that it opened about half of them. The man, who Jaden later identifies as Conor, asked if he could make a copy of the key so that he could find somewhere to sleep. Jaden let him.

On the way back to Dublin Castle, Scorcher gets a message from Geri saying that Dina left. Geri is hoping Dina came back to him in Dublin. Scorcher tells her to keep trying Dina’s cell phone and promises to look for her after he finishes Fiona’s interview.