Cruz is a firefighter-paramedic starting over after a betrayal that cost him his crew, his home, and his faith in people. All he wants is to do the job, keep his head down, and let nobody close enough to hurt him again.
Grant Falk is the pariah of the Twelve - the medic who did the unforgivable thing, the one everybody routes around. And he's the exact kind of man Cruz swore he'd never stand beside again: a betrayer. Cruz files him under sentenced-on-sight and moves on.
Except the cartoon villain won't hold. Forced together on call after call, Cruz keeps catching the cracks - a grief too big to fit the story, a tenderness Falk lets no one see, a man carrying something that's eating him alive. And the hatred starts complicating into something that terrifies Cruz far more, because wanting Falk means wanting the mirror of the man who destroyed him.
Falk knows he doesn't get to be wanted. He's spent two years proving it. But Cruz won't do the dance, won't look away, won't let him hide - and for the first time in his life, Falk is out of ways to push a good man off before he gets too close.
To have each other, they'll both have to do the one thing that terrifies them most: stop running, tell the truth, and let themselves be seen.
Mutual Aid is a steamy, emotional MM romance - enemies to lovers, a hard-earned redemption arc, gut-deep hurt/comfort, and a happily ever after two wrecked men have to fight for. Book 2 in the Medic 6 series, and a complete standalone with its own HEA.