The missing father

John's away for a weekend on a leisure trip, as his friends insisted he needed a break. Ten year old Rosie has to stay with her godfather Sherlock Holmes, something she doesn't mind at all. But when John doesn't return and there is a break in at Baker Street, things take a dark turn, and Rosie finds everyone she loves in mortal danger.

Disclaimer:
Obviously I don't own Sherlock or any of the characters from the show. And the cover pic is from the show too, thus not mine (obviously, not like I could draw that).