Chicago P.d. - Season 4 🎯 🎁

The season's narrative is framed by accountability and the personal cost of life in the Intelligence Unit:

A crossover with Chicago Fire (Season 5, Ep. 9) where Kelly Severide is suspected of vehicular manslaughter. Chicago P.D. - Season 4

Briefly joined the unit as a recurring detective while Adam Ruzek (Patrick John Flueger) was on an undercover assignment. Major Plot Arcs The season's narrative is framed by accountability and

A cross-show romance developed between Antonio Dawson and Chicago Fire 's Sylvie Brett. Major Plot Arcs A cross-show romance developed between

In a devastating multi-episode arc, Alvin Olinsky (Elias Koteas) loses his daughter, Lexi, in a warehouse fire, pushing him to a grief-stricken breaking point.

Introduced in Episode 21 as a Detective from Robbery-Homicide, Upton eventually joins Intelligence, filling the vacancy left by Lindsay.

The season begins with Commander Emma Crowley (Barbara Eve Harris) investigating Voight and Lindsay for the murder of Justin Voight’s killer, a dark secret that strains their relationship.