Everyone who knows anything about cats knows they are mysterious, and none more so than Harry the Wonder Cat. Harry was granted supernatural powers after initially being summoned by the Cat King, 200 years ago. One of those powers is that he will live forever as part of his responsibility to care for the first-born Johnson in every generation.

Harry has been keeping close tabs on his current charge Nikki Johnson since she became the latest in the line of Johnsons under his care. This transition occurred only months before, following the 2019 Christmastime murder of her beloved Aunt Lynn in an attempt to steal the Pink Diamond she was believed to own. Thankfully, Harry and his cat gang were able to work together to solve the mystery, which was no small feat.

In Harry the Wonder Cat: The Jamaican Mission, Harry is back in action after receiving another special assignment from the Cat King. He has been tasked with finding out who killed Marianne Johnson in 1929. At that time, Marianne had just gotten married in Jamaica to Nikki’s Great Uncle Frank, Harry’s then charge in the line of the Johnson family.

Following Marianne’s death on their honeymoon, Frank spent the rest of his life trying to solve the mystery as to who killed her. Now, he is unable to be at rest and needs Harry’s help, since he has the limitations brought on by being a ghost. To accomplish this mission, Harry needs to go back to the Hailey House B&B where Marianne died.

Using his powers and the cunning of his cat gang, he convinces Nikki and her friend and housemate Heather to vacation in Jamaica. Once there, Harry rounds up some Jamaican cats - and even a dog gets involved - to help him solve the mystery. The leader of the beach cat gang is a beautiful petite cat named Luna, who may be the solution to more than one mystery.