Members of the Queens police department are taken hostage by a suspect’s father who demands justice for his son being shot by Roe.

Carrie and Al are at a loss to explain how a murder victim mysteriously appeared in an empty ballpark.

A key witness in a murder trial vanishes shortly before testifying, and Al desperately searches for her before the suspect goes free

A serial killer with knowledge of Carrie’s memory skills taunts her and the police department, as his list of victims grows

A second murder occurs at an active crime scene, and Carrie and Al try to determine if the crime was retribution or an unrelated attack.

Carrie and Al investigate the murder of a teen who seemed to have no enemies. Elsewhere, Carrie seeks help from her estranged aunt (Marilu Henner) to help probe her sister’s murder.

Carrie and Al investigate the murder of a public defender and discover the killer has bigger plans that may include a second death

The case of a murdered father turns into the more urgent task of finding the man’s missing infant son, but Carrie’s preoccupation with her sister’s death could be hindering the investigation.

A hard-partying heiress is murdered and the investigation takes a strange twist when the victim’s past is probed.

Al’s former partner is gunned down and the investigation reveals he may have been a dirty cop. Meanwhile, Carrie attempts to comfort Al without getting too closely involved.