The Missing Mummy is a novella written by Rob Roy. It was first published in 2001 and is a part of the A to Z Mysteries book series.
M is for Mummy. . . .
It's Mummy Monday at the museum, and Dink, Josh, and Ruth Rose are excited about the new Egyptian exhibit. It features a child mummy in an actual tomb! But then the mummy is stolen and the tomb robbed of its treasure. Can Dink, Josh, and Ruth Rose unravel the mystery and return the mummy to its rightful resting place?