**SUNDAY TIMES BESTSELLER** A PASSENGER IS MISSING. BUT WAS SHE EVER ON BOARD AT ALL? ‘Prepare to read it in one sitting!’ Shari Lapena, bestselling author of Someone We Know This was meant to be the perfect trip. The Northern Lights. A luxury press launch on a boutique cruise ship. A chance for travel journalist Lo Blacklock to recover from a traumatic break-in that has left her on the verge of collapse. Except things don't go as planned. Woken in the night by screams, Lo rushes to her window to see a body thrown overboard from the next door cabin. But the records show that no-one ever checked into that cabin, and no passengers are missing from the boat. Exhausted and emotional, Lo has to face the fact that she may have made a mistake – either that, or she is now trapped on a boat with a murderer... 'Agatha Christie meets The Girl on the Train' The Sun 'A rollicking page-turner that reads like Agatha Christie got together with Paula Hawkins to crowdsource a really fun thriller' Stylist 'A tense, moody drama…brilliantly claustrophobic setting' Sunday Times