Debbie Campbell

When a barrage of cyberattacks cripples the city, Stabler is convinced Wheatley is involved; Bernadette receives an unwelcome visitor.

When a strange murder scene points to a ritualistic killing, Castle and Beckett search for the killer.

When a young sailor's body is found in an abandoned building in a seedy part of town, an ominous message written in blood leads the team to switch gears to find the killer.

After caring for her dying husband for several months, a woman collapses; his condition mysteriously improves but hers deteriorates.

Melinda is surprised by Sam's reaction when she tells him about her gift.

Finch's number comes up when a fatal error blows his cover identity and sets off a series of escalating encounters with Samaritan's operatives, on the 100th episode.