Bill and Pete Go Down the Nile

Excerpt:

It's a new school year, as William Everett Crocodile and his trusty friend and toothbrush, Pete, prepare for a class trip down the Nile.

They're ready for the mysterious Sphinx. They're ready for mummies and pyramids. Their teacher, Ms. Ibis, has even promised them a glimpse of the priceless jewel called "the Sacred Eye of Isis." But are Bill and Pete ready for the Bad Guy, up to his usual no-good tricks?