"...this is not the first case of a weirdly murder related whistle."

"Okay. Cool. Investigate the other one."

"...actually your case might be chronologically the first. But anyway-- in a shock twist the other person with a murder whistle is already arrested."

"Fun. Ask him how you dehydrate people with a whistle."

Asking Roby is probably a bad plan, actually, but is an improvement on just trying to stab Parker.

"If I found the name of the person who died, and some evidence that they died on the night you thought they did, could I convince you to come forward?"

"What will you give me if I do?"

Ugh, bribery.

"What would you want?"

"What do people want? Money, sex, status, something to numb their feelings so they don't have to suffer anymore."

He sounds full of contempt.

"... Do you actually want that, or would you actually rather have a book deal."

"A book deal."

"I can see about pulling some strings."

"Before I go talk to publishers: where and when did this happen?"

He gives an address and a date, and says "I remember, because it was the full moon."

'Full moon' might also jog the memory of the some of the people he's going to ask.

"Thank you for that, I'll be in touch."

"All right. This didn't help with my writer's block, incidentally."

"Well, you never know when inspiration will strike."

He returns to his work.

He spends a little time asking questions of a local group of queans, who turn out to not know anything at all relevant, before he has to go and inform Terrence of his Evie-related plans.

His plan here is to come in with Evie. Present it as a fait accompli, make it clear he is actually worried about her safety, and she can also look appropriately doe-eyed. "Terrence, meet Evie, Evie meet Terrence."

"Pleasure to meet you, Evie."

"It's lovely to meet you as well."

Terrence smiles politely. Who is this random pretty lady you've brought to our home, Jing Yi?

"I am Mr. Jing's fiancée."

"And unfortunately I'm here to double-- en-third-le?-- the number of people in this house who are on the run, as such."

Terrence visibly blue-screens for a minute upon hearing 'fiancée', a surprised smile frozen on his face.

He glances at Jing Yi. "I - uh - alright. On the run?"

...that is the problem with roommates, they Know you and have Assumptions. "There is someone who is, hmm, not best pleased with the idea she might make her own decisions."

(He is not immediately opening with 'she is engaged to dries-out-tramps guy'.)

"...I see. Well, welcome into to our humble abode, Miss Evie."