Thrillers that toy with your mind while driving their characters out of theirs are even better when they remain unresolved for two or three nights out of your life.
Secrets and Lies (Amazon)
Not to be confused with the second-rate American version, this Australian whodunit finds a family man at the center of a mysterious child murder. As he tries to discover the real killer, his family and neighbors peel away, the aforementioned secrets and lies are revealed, and none of them are what you expected. (Six episodes)