Lost Platoon Books in Order

The Lost Platoon books take Monica McCarty's love of elite fighting units and move it into the present day. Instead of Robert the Bruce's shadow warriors, you get SEAL Team Nine, a top secret platoon sent on a mission in Russia that goes spectacularly wrong. Half the team is lost, the survivors are presumed dead, and the men who remain have no idea who betrayed them or whom they can trust.

That is the hook for the whole trilogy.

The first book, Going Dark, sets the tone quickly. One of the surviving SEALs, Dean Baylor, disappears under an alias and lays low in Scotland after the mission disaster. Annie Henderson, a marine ecologist who thinks she is heading into one kind of protest, walks straight into something much bigger. The series likes this kind of collision, ordinary life smashed into covert operations, and romance growing in the middle of danger.

Off the Grid widens the conspiracy. Brittany Blake starts looking for answers about her missing brother and runs into John Donovan, a SEAL who is searching for the same truth from a different angle. By this point the books feel less like isolated romances and more like one running investigation, with the emotional story of each couple tied directly to the larger question of who set the team up and why.

Then Out of Time brings the trilogy's central mystery to the front through Scott Taylor, the platoon's leader, and Natalie Andersson, the woman he loved and thought he understood. Their story leans hardest into espionage, betrayal, and divided loyalties, which makes it a strong closer for the series. By the end, the romance and the thriller plot are working side by side.

Everybody is hiding something.

The tone is fast and modern. These books move through covert missions, false identities, intelligence work, cover-ups, and globe-hopping danger, but they still keep the romance at the center. McCarty is good at writing competent, stubborn people under pressure, and that carries over cleanly from her historical fiction. The women here are not passengers. Annie, Brittany, and Natalie all have their own skills, motives, and reasons for pushing back.

If you are coming from Highland Guard, the team dynamic will feel familiar even though the setting is completely different. If you are new to McCarty, this trilogy is a good place to see her do romantic suspense with a strong ongoing arc. These books connect more tightly than some of her historical novels, so reading in order works best. Start with Going Dark and keep going. The payoffs land better that way.