REVIEW: Merciless by Ella Frank & Brooke Blaine (Park Avenue Kings #4)

- October 16, 2025

MERCILESS

Park Avenue Kings - Book Four

by Ella Frank & Brooke Blaine

Release Date: October 16, 2025

Review

Wow…the tension!!

Theo is an obnoxious brat that I wanted to banish to a deserted island on multiple occasions. But the chemistry between him and Shp was off the charts. And he does teach Shep to stand apart from King. So he gets bonus points for that.

Somewhere in between the chaos that surrounds them, they find time to burn up the sheets, but also share their vulnerabilities and tender sides.

This is a wild ride, and it’s not over yet. This couple is so fire, they need two books!!

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Synopsis

He was sent to watch me. Now he can’t look away.

They sent the president’s son to babysit me.

How precious.

Shepherd “Shep” Winchester III thinks he’s here to keep me in line—keep me quiet, keep me still, keep me safe.

Good luck with that.

I’m Theodore “Theo” Rinaldi, the youngest Prince of Monaco, and the most merciless of the Park Avenue Kings. And I don’t do obedient. Not for my royal family. Not for the crown. And definitely not for the suit King sent to shadow me.

Shep is all discipline and duty.

I’m chaos in a custom suit.

We clash. We combust.

And then we cross a line we can’t uncross.

Now there’s a blackmailer on our trail, a target on my back, and the Kings think I’m the traitor. But if they want to come for me, they’ll have to get through him.

Because the soldier with the perfect posture and the unreadable eyes?

He’s not just protecting me anymore.

He’s falling for me.

And I’m going to ruin him for it.

Merciless (Park Avenue Kings #4) is the first book in a duet within the Park Avenue Kings series. Ruthless (Park Avenue Kings #5) will be the continuation.

About Ella Frank

Ella Frank is the USA Today Bestselling Author of the Temptation series, including Try, Take, and Trust and is the co-author of the fan-favorite Preslocke series. Her Prime Time series has been praised as “highly entertaining!” and “sexy as hell!”

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About Brooke Blaine

Brooke Blaine is a USA Today Bestselling Author best known for writing romantic comedy and M/M romance. Her novels lead with humor and heart, but Brooke never shies away from throwing in something extra naughty that will scandalize her conservative Southern family for life (bless their hearts).

She’s a choc-o-holic, lives for eighties bands (which means she thinks guyliner is totally underrated), believes it’s always wine o’clock, and lives with the coolest cat on the planet—her Ragdoll/Maine Coon mix, Jackson Agador Spartacus.

Where to find them: