Does Johanna Die in the Stranger?

Patrick Katz (Paul Kaye) is a police officer who is responsible for killing cafe owner, Heidi Doyle (Jennifer Saunders). In the final episode Heidi's friend detective Johanna Griffin (Siobhan Finneran) find out it was Katz who killed her.

Does Katz kill Joanna?

In the last episode of the series Heidi's friend Johanna Griffin discovers it was Katz who killed her. Katz keeps Johanna hostage at his home but she manages to escape and he tries to hunt her down. Unable to find her, he turns his attention to locating the stranger and her partner Ingrid.

What happened to Tripps body in the stranger?

Eventually, it's revealed that his wife didn't go missing - he murdered her for wanting to leave with his child. He wraps her body in a garbage bag and conceals it in the walls of his home.