The Irish Sea is cold, swarms with stinging Lion’s Mane and Portuguese Mar O’ War jellies and, to add to its ruthless reputation, there’s an amphidromic point just south of the Isle of Man which is rife with some of the most dangerous and violent sea currents in the world. Not the sort of place you'd want to go for a morning swim, you would think. But tell that to DI Sarah Flemons and DC Penny Chakyar. It's just the sort of challenge they love - until the inevitable happens.

While their friends search in vain for the missing pair, the mysterious appearance of a dead body has some people scratching their heads. Who is he and how did he get there? A few miles away, Joseph Adebayo finds himself imprisoned in an ancient swimming pool complex and Carla and Alishya arrange for the disposal of husbands and lovers because - well because that's the way they roll.

Confused? All will become clear when you read the latest romp in The Island Connection series.