Queen of the Road by Lois Phoenix
Private detective Toni Marconi has one golden rule: always mix business with pleasure. Provided, that is, she can be in charge. When she sets out on the trail of a missing heiress her friends worry she may have bitten off more than she can chew. Toni's leads take her to a nightclub on the edge of the Arizona desert where she meets characters with even stranger sexual appetites than her own. And then there is 'Red' - the enigmatic biker who holds a volatile sexual attraction for her. One thing's for sure, Toni will not give in until she's satisfied, whatever the consequences.