In the Mire of Midnight

Inspector Raquel Murillo has been undercover for two years and is looking forward to returning to her family and a normal life once her latest operation ends. However, when one of the thieves she is working with mentions that someone he knows is planning the biggest heist in history, she fears that she will be forced to remain undercover by her superiors.
And when Sergio Marquina lets his brother talk him into allowing a safe-cracker to become part of the team despite his misgivings, neither he nor anyone else involved have any inkling of the life-altering impact that decision will have on all of them.