It's chapter 5 of The Wild and Wacky water caper! Rather than being written by our regular favourite detective, this chapter is written by his coworker Cynthia Walerston! Check it out at https://friller.works/a/www5 after reading the sample below.

"In dealing with the case involving the demise of Harvy Swollenspepper, these are my findings in conversation with Mr. Connor Skorcavilitz, which is the pathologist (or autopsypator as Our Favourite Detective refers to the job as, for reasons unbeknownst to man and beast alike) assigned to the case of the previously named deceased..

The subject was found to have..."

Yeah, you're going to have to read the chapter to know what it was,