DI Annika Strandhed and the Marine Homicide Unit return to solve more brutal and unexplained murders that wash up in Scotland’s waters. The team dynamic shifts, pushing them to rapidly adapt as they encounter murders more complex than ever before. Meanwhile, Annika balances a family dynamic that grows more complicated as long-held secrets from the past begin to impact her relationships.

The sharp, witty and enigmatic DI Annika Strandhed, as she heads up a new specialist Marine Homicide Unit (MHU) that is tasked with investigating the unexplained, brutal, and seemingly unfathomable murders.