To earn the "CONFESSION" trophy in Detroit: Become Human, you must get a confession out of the android in "THE INTERROGATION". Of course you're not going to be able to do that if you didn't catch the android in the first place, so you won't be able to get this trophy if you didn't already earn the one below (see my guide there for instructions):
You should also ensure that you located the statue in the bathroom during "PARTNERS" and looked at RA9 scrawled on the shower wall - this gives you the most comprehensive options when probing the suspect and gives you more options later in the game.
In the interrogation you want to get the android's stress level up into the rectangular area of his stress bar, above 50 and below 75 (on Casual difficulty), and keep it there until you're done with the questions.
Here's a safe strategy:
*** Spoiler - click to reveal ***1. Before you sit down, browse the file on the table.
2. Take a seat and analyze the android with .
3. Analyze its head LED, the ID label on its shirt, the bloodstains on the shirt, the damage on its right arm and the cigarette burns on its left arm.
4. Choose to interrogate with .
5. The android starts out with stress level 35. You want to get it up to between 50% and 70% and keep it there.
6. Start with "Show Photos" then "Fear" to get it to 39.
7. Threaten to get it to 43.
8. Probe Memory to get it to 51.
9. Tell the truth to get it to 54.
10. Tell the truth again to get it to 59.
11. Pressure it to get to 69 and then give up.
12. Convince it and order it to get to 71.
13. Offer to protect it to keep it stable.
Once it has confessed the basic crime you can ask it about everything else - Writing, Statuette, Offering, rA9. However you wrap things up from here, the confession is in the bag.
Whatever happens at the end of the chapter, as long as you got the confession you will get the trophy when you reach the flowchart.
A couple of notes on how the end of this chapter can affect other trophies and how you might want to adjust your approach accordingly:
*** Spoiler - click to reveal ***There is an opportunity to kill Connor in this chapter if you are working towards:
But you need to adjust your strategy a little to do so - when you get the opportunity, you should choose to probe the android's memory.
You'll automatically get the confession. Get up and talk to the android. Give it a cold response. Leave, and then Intervene when prompted. The android will shoot Connor.
Alternatively, if you want to get as friendly as possible with Hank for the below trophy you should follow the original steps and then make sure to Intervene twice when prompted. You get an extra nugget of information for a later chapter too.