ARC Review: A Deadly Entanglement by Cathy Pegau

A Deadly Entanglement
Author: Cathy Pegau
Series: Harriman & Mancini Mysteries (Book 2)
Publication: Minotaur Books (September 15, 2026)

Description: In A Deadly Entanglement, two queer women in turn-of-the-century New York must work together to uncover the rotten truth.

The truth isn’t always easy…

Margot Baxter Harriman has just survived her deadliest scandal as President of B&H Foods, and now there’s nowhere to go but up. Which is why she’s organizing a fundraiser for the crowded, overworked city charity hospital, where she hopes to do good and give back–until a body falls past a second-floor window.

The nurse’s death is quickly ruled a suicide, but fellow nurse CeeCee Foxmoor, Margot’s friend and the live-in partner of investigator Rett Mancini, isn’t so sure: this isn’t the hospital's first suspicious death. CeeCee’s concerns draw both Margot and Rett into an undercover scheme to untangle the threads behind the deaths everyone else is ready to overlook.

Then another death catches their attention: Margot's old classmate checked into the Caspian, a luxury clinic catering to the New York elite, but never checked out. And the circumstances surrounding her death feel eerily familiar...

As both the secrets and bodies pile up, Rett and Margot realize that while money can buy anything, behind ward doors, everyone pays a price. This time, their search for the truth might cost the people they love.

Cathy Pegau’s A Deadly Entanglement is the captivating follow-up to A Murderous Business, where two women’s determination challenges the cost of greed–and the price of failure.

My Thoughts: Margot Baxter Harriman is meeting with the head doctor at the City Charity Hospital to plan the next major fundraising gala when she sees a body go by the window. The first conclusion is that the nurse committed suicide.

CeeCee Foxmoor is also a nurse at the CCH and she's sure that her friend didn't kill herself. She is just the next in line in a series of suspicious deaths. CeeCee is living with Rett Mancini who is a private detective. Rett, CeeCee, and Margot met in the first book in the series and became friends. In fact, Margot is a silent partner in Rett's detective agency. 

Rett goes undercover to try to find out what is going on at CCH. Meanwhile, Margot has questions of her own when a school friend of hers dies unexpectedly at the Caspian which is a hospital for New York City's Elite. She decides to go undercover herself to see if she can learn anything. 

The first thing she and Rett learn is that two of the doctors are associated with both hospitals. The charming Doctor Ewan Beales convinces Margot that she has a condition that can only be treated on an inpatient basis and has a wonderful new green pill named Tranquility for her to try. 

Rett and Margot's investigations overlap when they discover that each centers around the little green pills. There's money to be made by looking the other way and, if people die, it really is just an accident or so the villains say. 

I liked the NYC setting and the time period. I liked that the main characters were lesbians trying to deal with a society where that fact needs to be hidden. I like the relationship between CeeCee and Rett and have hopes for the relationship between Margot and Shiloh. 

I received this one in exchange for an honest review from NetGalley. You can buy your copy here.