Shifting Gears is book fifteen in the multi-author Cougar Challenge series, and book two in Jayne Rylon's Racing for Love series. A standalone story in the Cougar Challenge series. Mark envies his friend, Bastian and the cougar who tamed him. For years he's had his eye on a sexy, older, married woman. Despite his and Bastian's sharing women, he refuses to poach outside his steamy fantasies. Sloan travels with the race car drivers as the league's publicist. Living abroad can be lonely, especially when touring somewhere like China - where beautiful landscapes surround them but language and cultural barriers are high. Until she meets Lynn, who shares her love of erotic romances. In Lynn, she gains more than a friend - because sexy-as-sin navigator Mark is never far from the cougar and her fiancé, Sebastian, making Sloan wonder if it's time rejoin the dating scene after a nasty divorce. When Lynn notices the chemistry between Mark and Sloan, she issues the 'Cougar Challenge'. Sloan expected fantastic sex. But she never imagined her relationship with Mark would empower him to explore the sexual tension building between him and Bastian ... Four friends, two couples ... one night none of them will forget. Reader Advisory: If you didn't guess from that last line, this story contains a sizzling FMMF ménage.