Dark Fire. Number 6 in series, Paperback/Christine Feehan

When Darius, the leader of a small band, first sees the mechanic hired to work on the band's touring vehicles, he is astonished to see the red colour of her hair. Although mechanic Tempest Trine needs the job, she soon realizes she's bitten off more than she can chew. Now, she might be in a danger more potent than anything she has ever known.