When Reykjavik crime detective Helgi Marvin Runarsson is called in to investigate a suicide case on Snaefellsnes Peninsula, the case turns out to be far from simple. Pulled into a sinister trail of evidence, Helgi's own deeply hidden secrets are unearthed. Will Helgi turn a blind eye to murder in order to save the life of his daughter.

The Cliff is a dramatic mystery about a Crime Detective who is sent to a small community in Iceland to help a local policewoman investigate a suspicious accident. Together they unravel a mystery that involves bizarre incidents and unexplained deaths.