Cousins Joe and Maya find a smartphone that enables them to become time-travelling detectives
When Joe Smallwood goes to stay with his Uncle Theo and cousin Maya life seems dull until he finds a strange smartphone nestling beside a gravestone. The phone enables Joe and Maya to become time-travelling detectives and takes them on exciting adventures back to the past. The Mystery of Maddie Musgrove features our two young time-travelling sleuths who must journey back to Victorian times to try and save the life of an innocent girl. Can Joe and Maya save innocent maidservant Maddie Musgrove from the gallows?