I recently started reading & reviewing titles from J.D. Robb/Nora Roberts’s ‘in death’ series, starting with a random book in the middle, going back to the first book, and then leaping forward to the most recent release. Each book in the series has a title that fits into a certain format (Naked in Death, Memory in Death, Strangers in Death), with the variant word having something directly to do with the mystery at the heart of that particular installment in the series. This is a popular format for the titles within an extended series of books because it makes it easy for readers to know that a given book fits into the series they know and love.
Today, come up with your own base title format that could be used in this manner. It doesn’t have to be for a mystery series—it could be for any genre you prefer, or even a non-fiction series. Then brainstorm at least five different variations on the title and a quick summary of what each one would be about.