The second children’s murder mystery from number-one-bestselling author of The Appeal, Janice Hallett, perfect for fans of Robin Stevens and Rhian Tracey.

Imagine an old museum with more secrets than anyone could ever guess. A school trip that ends in murder. A crime unsolved for decades. . . But who did it?

Now, Ava and Luke are on the case, following the clues left in a new box of murders. Using School workbooks, museum records, secret recordings and letters the siblings start to unravel the mystery of a body in the basement. But can they discover what really happened . . . before the killer strikes again?

YOU know the facts. YOU have all the clues. Can YOU solve the mystery before they do?

Praise for A Box Full of Murders:
'Pure catnip for budding young sleuths' The Telegraph

Heralded as 'Agatha Christie for the 21st Century', Janice Hallett's adult murder mystery novels with an epistolary twist have sold over half a million copies through TCM to date and been sold into 17 languages. Her debut book, THE APPEAL, was named Sunday Times Crime Book of the Year and awarded the CWA Debut Dagger. Her four adult follow-up novels have also all been Sunday Times Bestsellers. Her debut children's novel, A BOX FULL OF MURDERS, was the bestselling children's mystery of 2025 and shortlisted for the Books Are My Bag Reader Awards.