Head Cases — John McMahon

Click Here for Your Copy

⭐️⭐️⭐️⭐️ | 4/5

Apparently all you have to do is give me a group of highly intelligent, slightly socially questionable FBI agents and a murder puzzle no one else can solve.

That’s it.

I’m in.

Head Cases introduces FBI agent Gardner Camden, an analytical genius with a thing for puzzles, riddles, and patterns. He’s part of the FBI’s Patterns and Recognition unit—PAR, a team of five brilliant but unconventional agents who are usually brought in for difficult or cold cases.

Their newest problem?

DNA from a murder victim points back to a serial killer who was presumed dead years ago.

Which feels inconvenient.

And also like exactly the sort of workplace problem PAR was created for.

What I expected was a straightforward serial-killer thriller.

What I got was a murder investigation mixed with puzzles, patterns, clues aimed directly at Gardner, unusual personalities, and an FBI team I became weirdly attached to almost immediately.

Gardner was easily the highlight for me.

He’s incredibly smart, operates a little differently from everyone around him, and could have very easily turned into the stereotypical “LOOK HOW BRILLIANT THIS DETECTIVE IS” character.

Thankfully, he didn’t.

Instead, the dynamics between Gardner and the rest of PAR make the book work.

Everyone brings something different to the investigation, and watching them connect information that looks completely meaningless to everyone else was probably my favorite part.

Basically:

Normal investigator:“I don’t see a connection.”

PAR:“Give us twelve minutes and a whiteboard.”

The mystery itself kept me interested, and I liked that the story makes you actually think about the clues instead of just waiting for someone to dramatically reveal the killer in the final twenty pages.

My reason for four stars instead of five?

I liked the characters more than I loved the case.

The investigation was good, the twists worked, and I wanted answers—but I never quite reached that cancel my plans, nobody speak to me until I finish this level of obsession.

But here’s what matters:

I absolutely want another book with this team.

And for the first book in a series, that’s a pretty big win.

WTP VERDICT

Serial-killer-linked murder mystery? ✔️FBI puzzle nerds? ✔️A team of brilliant weirdos? ✔️Clues that require an unreasonable amount of brainpower? ✔️Me voluntarily signing up to follow these people into another murder investigation? Yep.

RATING: ⭐️⭐️⭐️⭐️

Head Cases is smart, different, entertaining, and probably the beginning of another series I did not need to add to my life.

Did I need another fictional investigative team to become emotionally invested in?

No.

Did I do it anyway?

Obviously.

FOR THIS AND OTHER GREAT READS CLICK HERE