The name of a mystery novel should be related to the plot and theme. Here are some possible names: 1 Mystery Case 2 Murderer's Mystery (Murderer Case) 3 Disappearance Case 4 Mystery Fictions Murder Mystery (5) Mystery Case (6) Mystery Fictions 8. Disappearance file Mystery Fictions Mystery Case I hope these names can help you find a suitable mystery novel name for you.