Mummy Who Wouldn't Die, The (Choose Your Own Nightmare #9) by E.A.M. Jakab

After hanging out in the Egyptian wing of the museum all afternoon, you, Josh, and Kate are ready to go. You saw the new mummy and checked out some exhibits. It was cool. Especially the mummy's amulet. The Egyptians believed it had magical powers. Like protecting the mummy from evil.

But after you leave, Josh finds the amulet in his pocket. He swears he doesn't know how it got there. The three of you have to return it. The museum is closing soon. And the mummy is waiting....