One Chicago Crossover Recap: One Character Suffers a Personal Tragedy

Wednesday's three-hour, four-part #OneChicago crossover concluded with a victory in the books for the Chicago Justice attorneys -- but one that couldn't begin to compensate for the tragic loss suffered by one member of Chicago P.D..

Despite the best efforts of Drs. Halstead (Nick Gehlfuss) and Manning (Torrey DeVitto) at Chicago Med, Alvin Olinsky's (Elias Koteas) 19-year-old daughter Lexi succumbed to injuries she sustained in a massive fire at a warehouse rave, and was one of 39 victims killed by the blaze.

Initially, the Chicago Fire crew believes the fire was accidental, but after an investigation, Severide (Taylor Kinney) discovers that it was arson -- and that whoever sent the warehouse up in flames shoved metal wedges under the doors in order to trap the victims inside.

Mouch (Christian Stolte) is also injured on the fire call when a balcony collapses on him as he's trying to rescue some of the victims Jay Halstead (Jesse Lee Soffer) fatally shoots a man who's one of the early suspects and who threatens the police; Antonio's loyalty gets questioned in his new gig at the state attorney's office when Voight falsely reports that the arson suspect confessed; and a tabloid reporter threatens to make public what sounds like an illicit weekend Stone (Philip Winchester) had with a married woman four years prior when Stone tries to get him to testify.

What's more, he's able to bait Dylan into outbursts both on the witness stand and at the defense table during Stone's closing argument, resulting in the jury finding him guilty on all counts.