"Why would someone commit murder over a cupcake?"

That is Detective Gordon's question. Eliza doesn't have an answer, and doesn't particularly want to find one. Gordy promises she doesn't have to get involved...just look at the cupcake and use her culinary knowledge to tell him why it would inspire murder.

It's never that easy.

Not for Eliza Carlisle.

What should be a relaxing two week break between semesters of culinary school turns into a never ending string of embarrassing, injury-inducing, rat-filled situations Eliza can't escape. She hadn't wanted to meet Puck's parents to begin with. Meeting them in the middle of the murder investigation and running into Chef Harper, her least favorite instructor who is intent on making her life miserable, guarantees anything but a good time.
Add it just keeps getting better. Baxter is getting impatient. His ex-wife, the Evil Queen of Darkness, is getting more vicious by the second. Cupcake bakers are dropping every time the cops turns around. Eliza quickly finds herself hating the Christmas holidays even more than usual. All she has to do to survive her least favorite time of the year is catch a killer, beat Megan at her own evil game, hold off Baxter a little longer, and face down Puck's unimpressed parents.

Piece of...cupcake.