Alice Gaines 
Menage On A Train [EPUB ebook] 

Cass Weston hated the idea of joining the mile high club. After all, who wanted to grope in a crowded airplane bathroom when you could have the erotic trip of a lifetime on a luxury train through the Eastern European mountains? Especially when the journey boasted a long, dark tunnel that provided the perfect opportunity for sex with a stranger. Make that strangers.The man Cass set her sights on also had a friend without a partner of his own. Lucky for them that Cass is up for a little adventure. . . .