Tyler Jacob Moore

Jimmy Palmer becomes the target of a killer who only he can recognise.

In Boise, an internet predator is using social networking sites to stalk potential victims.

A wealthy bachelor and ex-Marine, killed by a fall from a rooftop, turns out to have been living a double life. The OPS team search for a motive when it is discovered that he was murdered.

Firehouse 51 helps Herrmann put on a school fundraiser; Carver's troubled brother comes to town; a grateful citizen is determined to thank Brett and Severide for saving his life.

Jeff has a point to prove to Audrey, and invites her to watch his softball game to convince her he isn't old yet.

When Frank goes out on a Friday night, he disappears and misses cashing his disability check. He wakes up in Toronto, but has no recollection of what happened.