Night Stalker, Paperback/Robert Bryndza

A heatwave descends upon London, bringing with it the Night Stalker - a killer picking off secretive, single men. The second case in Bryndza's well-loved series finds Erika Foster tasked with piecing the clues together even if it means risking her job. This is heart-in-mouth fare perfect for followers of Rachel Abbott and Karin Slaughter.