Ryan Czerwonko

McCall's online ad leads her to a mother whose son has been kidnapped by a human trafficker (Thomas Beaudoin) and will be executed unless she steals confidential information from her FBI agent employer. Also, McCall enlists Aunt Vi to help uncover a secret Delilah is keeping from them both.

One of Voight's (Jason Beghe) friends, Congressman Scott Graynor (guest star Scott Bryce) is found passed out in his hotel room with a dead Ukranian girl. When Intelligence discovers the murder is connected to a sting and Burgess' (Marina Squerciati) boyfriend (guest star Zach Appelman) is working with the Feds, Burgess must choose between compromising her case or her boyfriend's case.

At Sgt. Voight's (guest star Jason Beghe) urging, a determined Lt. Casey (Jesse Spencer) agrees to go undercover in an effort to provide proof of Jack Nesbitt's (guest star Eric Mabius) shady dealings. Meanwhile, Otis (Yuri Sardarov) and Severide (Taylor Kinney) continue to disagree about the integrity of Scott Rice (guest star Warren Christie), causing tensions to flare between members of truck and squad. Meanwhile, Herrmann (David Eigneberg) helps out a fellow member of the firehouse.

Determined to find out more information behind what Sentinel Services did to an old friend of his, Thunderbird spearheads a mission to get answers. Meanwhile, Lauren encounters a new friend with useful powers and Blink makes a big decision regarding her future.

After a surprising introduction to Phoenix's newest recruit, Desi (Levy Tran), MacGyver and team are assigned to escort and protect an ATF (alcohol, tobacco, firearms) gun-sniffing dog who has a bounty on his head, only to discover they're not the only ones crashing the weapon drop.