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Join Ali Dawson and her cold case team for another thrilling case.

Ali Dawson is a police detective who leads a unit that investigates cases so cold her team must travel to the distant past to solve them. But Ali and the team haven't been allowed to time-travel ever since their technical expert, Jones, got stuck in Victorian London, never to be seen again.

To distract herself from meaningless tasks, Ali decides to look into a present-day case - an apparent suicide of a young man who fell to his death from a high building. She believes the death is linked to a psychic medium called Barry Power, who convinced the boy he could fly. Ali goes to one of Power's shows where he claims to be in contact with Jones.

When Ali notices that evening that her cat, Terry, has gone missing, she decides to go back in time just long enough to prevent Terry from escaping through his open cat flap. A dangerous plan which backfires, and she finds herself once more in Victorian London, where she meets Jones, as well as Power, and the darkly mysterious Cain Templeton with whom Ali has unfinished business from her previous visit to the past . . .

Praise for Elly Griffiths' The Frozen People - Book 1 in the Ali Dawson Mysteries:

'A five-star start to a dazzling new series . . . Smart, original and utterly masterful' Janice Hallett

'A pleasure from finish to start' Anthony Horowitz

'Fresh and exciting with both humour and thrills, Griffiths' first book in her new series knocks it out of the park' Shari Lapena

'A new book by Elly Griffiths is always a cause of delight, and this series promises to broaden our horizons. Ali Dawson will capture readers' hearts the way Ruth Galloway did' Mick Herron

'In The Frozen People Elly Griffiths brilliantly makes the unbelievable believable - a tour de force' Peter James