Orson Cart and the Museum Mystery
by Steve Donald
Orson and the Prof are now in Egypt, trying to find and excavate the ancient tomb of the Pharoah Ramoth. They find it - and more!-Ramoth's mummy, plus a bottle of elixir, which has youth restoring qualities! But when the mummy gets a soaking,he comes back to life - determined to get his hands on the elixir...!
Published by Red Fox
Out of print - try Amazon.
ISBN 0099438712