Frank's sanity comes into question on the season finale of Low Winter Sun. "Surrender" is the tenth episode of the show's first season.

Frank testifies in court.

This is a photo from "This is a Girl." It's the seventh episode of Low Winter Sun Season 1.

Frank questions a suspect.

Frank Agnew hunts for Katia.

The DPD's investigation ends up being linked with a low level murder on Low Winter Sun. "Cake on the Way" is the fifth episode of the show's first season.

Frank heads down a dark road in his search for Katia on Low Winter Sun. "Catacombs" is the fourth episode of the show's first season.

Geddes tampers with evidence in the McCann murder case on Low Winter Sun. "No Rounds" is the third episode of the show's first season.

When new evidence comes to light, it may alter the case on Low Winter Sun. "The Goat Rodeo" is the second episode of the show's first season.

Low Winter Sun focuses on detectives in Detroit. This is a photo from the premiere.

Low Winter Sun is a new show on AMC. It's a drama that centers on cops and criminals.