He appears in the chapter "Midnight Train". He is patrolling the area due to reports of androids and wants to inspect the house. Kara will offer to make him coffee, which he accepts. He will ask her questions and if she failed to hide any evidence of the deviants, his suspicion will increase and he will ask questions about what he finds.
He can check the pantry if Luther and Alice were told to hide in there and the curtain is open. He will pull out his pistol and shoot Luther as he charges towards him, but he also dies as Luther will shove him and he hits his head against a table as he falls.
When he hears noises in another room and Kara chooses to say it is nothing, he will examine the room and find two other androids in the house. He will pull out his gun and point it at Kara and Adam, telling them to get in the room with the others. Luther will attack him, which also results in Luther dying and the officer dying.
If his suspicion level is low, he will say goodbye and leave.
- His actor David Gasman is one of the long-time collaborators of Quantic Dream. Including major roles, he performed in every Quantic Dream game. After Fahrenheit, the developers started to use his likeness on the characters he portrayed such as Paco Mendez in Heavy Rain and Lt. J. Sherman in Beyond: Two Souls.
- His appearance is determinant.
- On his ID card, his name reads "Mack, Alexander". However, a different-looking male cop with the same badge number 0617 and the name has a mini-appearance in "The Eden Club". When Connor probes the Tracis' memories in the Eden Club, the cop can be seen in the memory of a Black HR400 in the Red Room's booth 26, looking back at it.
- Another male cop with the same badge number 0617 appears in "Last Chance, Connor" at the DPD Central Station. He interferes with the assault on FBI agent Richard Perkins, which is created as a distraction for Connor.