Deborah Showjohn 
Right Place, Wrong Time a Modern Romance [EPUB ebook] 

Camille, a graduate student, is a witness to the murder of her boss by the Russian mob. She goes into hiding afraid to even trust the police but an FBI agent on another case gets entangled with Camille as she is preparing to change her identity. The FBI agent works to protect Camille and solve the crime only to find himself falling for the the young and beautiful graduate student.