Death arrives on the morning tide.
Soon after the aging cargo liner Alexandra Rose steams into the fog-enveloped Mersey Estuary, one of the ship’s passengers is found dead in his cabin, leading into Detective Inspector Andy Ross’s most baffling and complicated case to date.
Another death soon follows, and Ross discovers that his case has its roots in the depths of the Amazonian Rainforest. A billionaire entrepreneur, passengers who may not be exactly who or what they say they are, a team of medical researchers and a team of vicious mercenaries combine to confound and complicate what begins as a simple death aboard an insignificant ship.
Ross and his team from the Merseyside Police Specialist Murder Investigation team need all their skills in order to solve the case of the Mersey Mariner.