Cassidey was born and raised in Denver, Colorado, but she headed west soon after her 18th birthday to try her hand at hardcore. Cassidey claims to have been a virgin until just a year before her porn debut, which has lent an air of excitement and enthusiasm to everything she's done since. Her pouty mouthed, thick-lipped good looks are complemented by a wonderfully curvaceous frame and some of the most dazzling eyes in the business.

Cassidey jumped right into the deep end from the moment of her 1999 debut, turning up in a string of raunchy outings right off the bat. Among the best of these is her turn in Nasty Nymphos 25, where she joins Vince Voyeur in a ravenous rear entry romp. Her back door boffing with Erik Everhard in Lewd Conduct 6 also ranks as one of her most incendiary performances.

Cassidey’s glossy good looks and do-anything nature soon got her noticed by the industry's big boys, and in 2000 she signed on to become a Vivid contract player. Her Vivid debut was in Diary of Desire, in which she starred as a writer working on a book of erotica. Cassidey shines in a pair of scenes, first with Ian Daniels in a down and dirty dalliance, and later on in a jail cell threesome with Shelbee Myne and Billy Glide.

After a number of years away from the business, Cassidey made a return in 2006 with headlining appearances in several Vivid titles, and in 2007, she had a brief run as a contract player for Ninn Worx. She would go on to star in releases from Studio A Entertainment, Zero Tolerance Entertainment, Belladonna Entertainment/Evil Angel and Naughty America, among others.