The Secret Detectives


On board the S.S. Mariana, Isobel Petty witnesses a shocking act – somebody being thrown overboard in the middle of the night. But, when the ship’s captain insists that nobody is missing, Isobel and her friends must solve two mysteries – the identities of both the murderer and the victim.

Can they do it before the ship reaches England the the culprit has a chance to escape?

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