Mark Conor Hanly

Mark Conor Hanly is an archaeological-site worker whose account briefly opens a new line of inquiry into Katy Devlin’s death. Detectives establish that he spent Monday night in Knocknaree wood and elicit his report that someone was on the site. His importance lies in the limited but potentially valuable information he can offer: he is neither presented as the killer nor shown to identify the person he saw.

Identity and Introduction

Mark is working at the Knocknaree archaeological site when detectives Rob Ryan and Cassie Maddox begin investigating Katy’s death. The account places him among the people working around the excavation, with a mattock and a job he wants to return to. Before his formal interview, Cassie has already spoken with him about the site: she learns that bulldozers are used only in emergencies because they can destroy archaeological evidence, and that Mark considers the television programme Time Team unprofessional. His practical familiarity with the excavation gives him a connection to the place beyond merely being questioned there.

His first appearance in this investigative sequence is incidental. After Rob and Cassie return to the site, Mark comes out of the canteen and heads toward a Portaloo as reporters are leaving. Cassie notices a journalist approaching him, moves where Mark can see her, and catches his eye over the reporter’s shoulder. She then leaves them to it. The scene shows the investigators keeping watch on contact between the press and a potential witness, but it does not disclose what Mark says to the journalist or make that exchange evidence of any involvement in the crime.

The Interview and the Cigarette Butt

Rob frisks Mark and places him in an interview room; the narrative does not establish that he has been arrested. After allowing him time to wait, Cassie begins on a friendly note, while Mark makes clear that he wants to get back to work. Cassie records the interview with the camera in the room, and Rob gives him the police caution, explaining that he is not obliged to speak but that anything he says may be used in evidence. Mark reacts by asking whether he is under arrest, a question the exchange raises without resolving through a formal arrest.

The detectives’ leverage comes from a hand-rolled cigarette Mark had made for Cassie. She kept the butt and placed it in a Ziploc bag. Because it could be used to compare Mark’s DNA with cigarette butts left at his campsite, Cassie tells him that the police can establish his presence in the wood through forensic evidence. The comparison is described as something they could pursue without obtaining a warrant; the account does not say that testing is carried out or that a match is confirmed. The small discarded object turns an ordinary earlier interaction into an investigative tool, and Cassie uses it to persuade Mark that continued evasion will cost him more time than answering their questions.

What Mark Admits and Reports

Under questioning, Mark first challenges the detectives’ assumption that he has slept in the wood. Cassie then states that they know he was there on either Monday or Tuesday night, and asks him to explain when he went, what he was doing, and whether he saw or heard anything useful. She explicitly tells him that she does not think he killed Katy, distinguishing the need for information from an accusation of murder. Mark asks what forensic evidence they have; after Cassie displays the bagged cigarette butt, he acknowledges that he has spent occasional nights in the wood. When asked to specify the night, he says it was Monday only.

Mark does not offer a clear observation immediately. He first describes the conditions outside the site as country-dark, without streetlights, and says that he might not have seen or heard someone nearby among the other noises. Cassie broadens the question beyond the wood itself, asking whether anyone was on the excavation or road late at night. Mark then recalls that there was someone on the site. His hesitation matters to the sequence: the disclosure arrives only after the detectives redirect him from a general question about the wood to a more specific possibility of activity at the dig.

The available account ends as Rob asks Mark for a description. It does not supply his answer, identify the person, or establish whether the sighting is independently corroborated. Mark’s statement therefore adds a lead rather than a solution. His admitted presence gives the detectives reason to ask him about the night, while his description of limited visibility places a clear boundary around what he may have been able to observe.

Narrative Role and Limits

Mark’s interview redirects attention toward a possible late-night presence at the excavation, but the evidence keeps the result open. The cigarette butt supplies a means of testing his connection to the campsite; it does not itself prove what he did there or what he saw. Likewise, his admission that he spent Monday night in the wood establishes an opportunity to have noticed activity, not participation in Katy’s death. The detectives’ own stated position—that they do not think he killed her—makes his role at this point that of a reluctant source of information.

The episode also marks the difference between knowing someone was near a location and knowing what happened there. Mark’s account provides a night, a setting, and the presence of an unidentified person, while leaving the sighting’s meaning unresolved. The investigation gains a specific question to pursue, but the surviving details do not permit a stronger conclusion about Mark or the stranger.