Tom and Pradeep are back in the fourth book of the series and they brought Frankie, their zombie goldfish, with them!
In the first story, during a lock in at the museum the boys learn about the ancient Egyptian Curse of Cat King. Later, they see a cat shaped shadow dragging wraps and they think the Cat King has been awakened.
In the second story, on sports day, all the competition starts losing their sportiness. When Tom's evil scientist older brother, Mark, shows up and starts winning events without any competition, Tom, Pradeep ,and a new friend have to stop Mark before he accomplishes whatever evil plot he has in store.
I really like this series! I love all the different stories and evil plans. It's awesome how Frankie can hypnotize people to make them do what he wants. I find it funny that, even though he is dead, he can't stay out of water for long. I can't wait to read all of the fishy plots in the series.