A Beautiful Friendship was the season finale of the first season of Chicago PD.
Voight finds out who the identity of the person who has been spying on him for Internal Affairs, while Antonio recovers from his injury.
- Jesse Lee Soffer as Jay Halstead
- Jason Beghe as Hank Voight
- Jon Seda as Antonio Dawson
- Sophia Bush as Erin Lindsay
- Elias Koteas as Alvin Olinsky
- Patrick John Flueger as Adam Ruzek
- LaRoyce Hawkins as Kevin Atwater
- Marina Squerciati as Kim Burgess
- Amy Morton as Trudy Platt
- Stella Maeve as Nadia Decotis