Torn in Half — Samantha A. Cole

Retired Navy SEAL and current private-security operative Ian Sawyer had never expected to have a child, much less a wife, but his beautiful Angie has changed all that. Her due date is only days away, and his anticipation outweighs his anxiety, thinking about holding his firstborn.

But as he's learned the hard way, life throws curveballs at the worst possible moment. A frantic phone call in the middle of the night is the beginning of Ian's nightmare. He has to wake his brothers and teammates, leave his wife's side, and fly halfway around the world to save the only other woman who could bring him to his knees -- his mother.
The following is the best reading order for the original Trident Security series and its intertwined spinoff series - Doms of The Covenant, Deimos, TS Omega Team, and Blackhawk Security:

TS Book 1 - Leather & Lace (Devon & Kristen)
TS Book 2 - His Angel (Ian & Angie)
TS Book 3 - Waiting For Him (Boomer & Kat)
TS Book 3.5 - Not Negotiable: A Novella (Parker & Shelby)
TS Book 4 - Topping the Alpha (Jake & Nick)
TS Book 5 - Watching From the Shadows (Marco & Harper)
TS Book 5.5 - Whiskey Tribute: A Novella (Curt & Dana)
TS Book 6 - Tickle His Fancy (Brody & Fancy)
No Way In Hell Book 1 & Book 2 (Co-authored with JB Havens)
TS Book 7 - Absolving His Sins (Carter & Jordyn)
DOTC Book 1 - Double Down & Dirty (Gray, Remi, & Abigail)
TS Book 7.5 - Option Number Three: A Novella (Mitch, Tyler, & Tori)
TSOT Prequel - Mountain of Evil: A Novella
TSOT Book 1 - A Dead Man's Pulse (Logan & Dakota)
TS Book 8 - Salvaging His Soul (Jase & Brie)
Deimos Book 1 - Handling Haven (Frisco & Haven)
DOTC Book 2 - Entertaining Distraction (Mike & Charlotte)
Deimos Book 2 - Cheating the Devil (Brad & Avery)
Blackhawk Security Book 1 - Tuff Enough (Tuff & Chet)
Trident Security Field Manual: A Collection of Short Stories and More!
TSOT Book 2 - Forty Days & One Knight (Darius & Tahira)
TS Book 8.5 - Torn in Half: A Novella

*The books of the Trident Security series and its spin-off series can be read as standalones, however, for optimum enjoyment they are best read in order.

**The Trident Security series contains elements of the BDSM lifestyle, sensual romance, nail-biting suspense, and happily-ever-afters.