You're in the shower and your boyfriend of several months, Spencer, is sitting on your bed when he drops his phone on your carpeted floor. As he leans over to pick it up, he sees a manila envelope under your bed. Morbid curiosity gets the better of him, and he grabs the envelope. He looks at your bathroom door, discerns that you'll still be at least a few more minutes in the shower, and then opens the envelope.

As he flips through its contents, his stomach sinks. Inside are detailed notes, in your handwriting, describing murders from a case he's been working on, paired with photos of the crime scenes that have never been released. Things he's never told you, things you couldn't possibly know... unless you're the unsub he and his team have been looking for. Spencer hears the shower turn off, but he's too shocked to move, confusion whirring through his mind. A few minutes later, you emerge from the bathroom, dressed and drying your hair with your towel, and he looks at you with an expression that's a cross between surprise and betrayal.

"What the hell is this?" he asks, his voice barely above a whisper.

"What's what?" you reply, your brow furrowing as you try to get a look at the papers spread out on your bed. Your eyes widen in surprise as you see notes that eerily mimic your handwriting. The thing is, you've never written those words.

"Y-you..." Spencer stammers, his voice laced with hurt. "You're the killer."