When Diego Valdez took his sub, Kaci Ballard, on a trip to subspace, neither of them realized just how erotic that journey would be...or how it would end.

International businessman Diego Valdez had a reputation as a Dom for never keeping his subs more than two years. Then came the big gift and the kiss-off. But sculptor Kaci Ballard has been with him for three years and is wondering when her time will be up. Because Kaci has done the unforgiveable—fallen in love with him—and she's not sure how she'll handle the end when it comes.

When he tells her he wants to teach her how to enter subspace so they can raise the edge of pleasure/pain she agrees, hoping that will show him her total commitment—and give her the same in return. But neither of them is quite prepared for how this particular journey turns out.