Tempest definitely set the trap. Jesse didn't tell me how it worked, just where he found it. Tempest told me what it was. I didn't ask the person that got caught, but it makes perfect sense that Jesse would flip his shit over her.

[peter thinks of the scars on steph's legs, the things she's said in passing that aren't really passing at all.]

And it's not a stretch, that the person who got caught would've freaked out. At all.