Right now, you need to focus.  The apartment had just been vandalized by a threatening message attached to a brick.  Trisha has every right to know.  You type her number into the phone and place the call.  After a few rings, she answers.

"Hello?  Who is this?"

That's right, she doesn't know this number.

"Hey Trish.  It's Jack.  I just got a new phone from Harry, so I'm sorry if I confused you a bit."

She laughed on the other line.

"It's fine.  So could you tell me while your standing in my trashed livingroom, next to my broken window?"

It was at this point you saw her outside, looking very annoyed.  She hangs up and walks over very pissed off.

"Care to explain why the place looks like it's robbed and your the only person to blame?"

Crap! The prank has backfired.  The blackmail brick doesn't help either.  Quickly! Think of something to say!  If she thinks you've done this, she might think your a sadistic psychopath.  Say something!