For Logan Anderson, moving on from a traumatic past means moving back to his hometown of Castle Rock, Colorado, to start a personal-security business with his brothers. But it’s not long before Logan runs into Grace Mason, his best friend from high school…and the woman who never answered his letters during his Army years. Grace was pleasantly surprised to see Logan return to Castle Rock, despite their falling-out ten years ago. Everyone always assumed they would end up together, including Grace, who had eyes only for him. But as Logan eventually escaped their town, Grace got pulled further into her family’s controlling grasp—and farther away from the man she loved. Now, united by scars both visible and not, the two must fight to free Grace from the suffocating hold of her family. But the Masons won’t let go easily—and they’ll do whatever it takes to keep the couple apart.

Nothing is more important to Blake Anderson than the work he does with his brothers at Ace Security. At least that’s what he thinks until he meets the fiercely independent Alexis Grant. The security firm’s new intern pushes all his buttons—and makes his temperature rise. But giving in to temptation might be risky business. Alexis can tell that Blake has his doubts about her ability to commit. But while most people look at her and see only a flighty rich girl, she knows he sees much more. Determined to prove herself to Blake, Alexis jumps at the chance to work undercover. And when her case takes a dangerous turn, she puts her trust—and her heart—in his hands. Now, as Alexis digs into the deadly secrets of a local gang, Blake will lay everything on the line to protect the woman he’s come to love.

Opposites attract in the third Ace Security novel from New York Times bestselling author Susan Stoker. Bailey Hampton will do whatever it takes to keep both herself and her little brother safe from the vicious Inca Boyz gang. Hiding out in Castle Rock, Colorado, is only a temporary solution until she can earn enough money to get out of the state altogether. But when she meets handsome security nerd Nathan Anderson, she discovers a reason to stay and fight for what she wants. Ace Security’s Nathan Anderson has always been the “numbers guy,” not the man any of the firm’s clients look to when their safety is threatened. But from the first time he ran into Bailey, she never made him feel like less of a protector than his brothers. Nathan was attracted to the petite, black-haired pixie with wild tattoos from the start, and by some miracle, she seems to return his interest. But danger stalks Bailey and her brother, so it’s up to Nathan to channel his inner alpha and find a way to end the threat to their lives once and for all—and he’s not giving up Bailey without a fight.

Falling in love could expose a woman in hiding, in the fourth Ace Security novel from New York Times bestselling author Susan Stoker. Former mercenary Ryder Sinclair’s stunning discovery that he has three half brothers in Castle Rock, Colorado, is giving them all the chance to color in the spaces of their tragic pasts. For Ryder, establishing roots is made all the more desirable by Felicity Jones. But if Ryder’s instincts are correct, this breathtaking beauty is in trouble. Castle Rock isn’t Felicity’s home. Like her false identity, it’s just a cover. All she wants is enough cash to keep moving to another temporary hideaway—to stay on the run from a secret that’s haunted her for years. As safe as Ryder’s strong embrace makes her feel, she fears that falling for him, and staying in Colorado, will put everyone she’s come to love in danger. The more Ryder learns about Felicity, the more determined he is not to let her go. It’s time for her to stop running—even as a relentless danger closes in, threatening their love and their lives.

A Wall Street Journal and Amazon Charts bestseller. All defenses are down in the fifth Ace Security novel from New York Times bestselling author Susan Stoker. Sarah Butler isn’t flattered. She’s angry and unnerved. She’s been getting intimate gifts from a man she barely knows. Nothing threatening yet, but there’s just a weird vibe she can’t ignore. Her recourse is Ace Security. Their solution: self-defense lessons at Rock Hard Gym with a personal, hands-on instructor. One look at the bearded, tattooed, green-eyed alpha is enough to take Sarah’s breath away. Cole Johnson is definitely the man for the job. He’s eager to train her. Eager to get closer. And when it comes to Sarah’s instincts, Cole knows she’s not imagining things. He’s also not imagining the intense attraction between them—and his desire to protect her is growing. But so are Sarah’s fears, the worst of which come true when she disappears. Enlisting the help of Ace Security, Cole will stop at nothing to find the love of his life…before she vanishes forever.