[PTO Murder Club Mystery 03] • Just One Piece

When Mustang Ridges receives a severed penis in the mail, she knows it's going to be a bad day. She's sure there's a body to go along with the penis, but she can't find it.

While on the hunt for the owner of the penis, she stumbles across a dead body. It's Jane Dough, a substitute teacher at Lakeside Elementary. The Lakeside Elementary PTO is on the case. It appears that Jane might have been a prostitute who supplemented her income with a little substitute teaching on the side. After vowing to vet substitute teachers more carefully, Mustang and her two best friends go head-to-head with Davina Hasselhoff who runs the local brothel.

Deep in her heart, Mustang knows the she shouldn't shop at a yard sale outside of a brothel, but she can't help herself. They are selling all of Jane Dough's things. She's hoping for a clue, but all she gets is a concussion and a mummified finger.

What do a severed penis, a dead body, a brothel, and a mummified finger have in common? Mustang must figure it out before the killer sends her another body part.