The in-your-face title of Cosmic Sex wasn't particularly encouraging, but it turned out to be a very enjoyable read. Kia is from the planet Nerak, and she's traveled to earth to find her cousin Mala and return her to Nerak. After all, who wouldn't want to live on Nerak - a perfect planet with no disease, darkness, hunger... or men. However, Kia's spaceship lands with a bit of a bump, damaging the locator machine meant to find Mala. After wandering around for a short time, she finds herself in a seedy bar where a drug deal is about to go down. An undercover cop, Nick Scericino, ends up rescuing her from a dodgy biker.

Nick soon realizes that Kia is out of this world (in more ways than one) and agrees to help her find Mala so that she can return to Nerak. But the time they spend together, with Kia learning about humanity, puppies, childbirth, chocolate, sex and more, means that it might be harder for her to leave when the time comes than she originally thought. With the Russian mafia targeting Nick and Kia, as well as the police Internal Affairs suspecting Nick of being up to no good, things get more and more complicated.

This book is lighthearted fun, and most of the enjoyment comes from Kia's learning about life on earth. Author Karen Kelley is particularly good about showing the amusement of literalism in many colloquial sayings, such as "puke my guts out." Kia's attraction to chocolate, puppies, and, of course, Nick, added some fun moments. The supporting cast of Sam, Nick's cop partner, Weldon the gadget geek and more gave a bit more variety to the overall character mix. The side plot with the Mafia isn't too important to the overall story, but the pacing is good and it's always fun to read.