Amara

Amara, Princess of Egypt, lies in her coffin in the Charles Wood museum. She's been dead for 4000 years. Or has she? Barney, the nightwatchman, is the first to discover the mummy's coffin has been broken open. 

It seems grave-robbers are at work, so it's a pity that Barney can't tell the authorities - the dead can't testify to anything. Now Amara is free again and nothing can kill her...