After old remains resurface in a heatwave, a young woman is attacked and left fighting for her life in hospital. 24 hours later she dies and a deadly tattoo is discovered on her body.

When another young woman disappears, Detective Francis Sullivan and his team fear a serial killer walks the streets of Brighton.

His team identify a suspect, Alex Mullins, son of his lover, Marni. Can Francis forget their shared past and save the next victim before it is too late?