When Sir Digby Digger shows up at the Mummy family's pyramid, their routine day becomes an adventure as they help the archaeologist find new transportation and then need his help to free a stuck whale.

"Mummy Cat prowls his pyramid home, longing for his beloved owner. As he roams the tomb, lavish murals above his head display scenes of the cat with his young Egyptian queen. Hidden hieroglyphs deepen the tale and are explained in an informative author's note"--

When reports of a mummy terrorizing the New Mouse City Museum flood the Rodent's Gazette's telephone lines, Geronimo Stilton, editor-in-chief, searches for an explanation to prove that there is no mummy.

"After being put back to sleep and abandoned in an old museum, Slappy is brought to life by a curious girl on a school trip. Out for revenge, Slappy uses his powers to raise an army of creatures from the exhibits. But when the museum closes, Slappy and his new friends are locked inside with Arragatis, an ancient mummy with his own plan for revenge. It's dummy versus mummy as Slappy faces his most dangerous and frightening opponent yet! Can Slappy...

Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.