Susan Vanita Diol is an American actress who has played supporting roles in over forty television series, including Quantum Leap (1989–1993; 2022–2024), Night Court, One Life to Live, Wings, Star Trek: The Next Generation, Star Trek: Voyager, NCIS, and CSI: Crime Scene Investigation.
Diol acted in children's theatre productions in Illinois before beginning her on-screen career.
Diol has appeared in episodes of science fiction television series, including: portraying Carmen Davila in the Star Trek: The Next Generation episode "Silicon Avatar";[2] the role of Doctor Danara Pel in the Star Trek: Voyager episodes "Lifesigns" and "Resolutions";[3] the role of Beth Calavicci, first wife of Al Calavicci, in two episodes of Quantum Leap (including the finale to the original run of the series);[4][5] and reprised the role of Beth in three episodes (in both seasons, including season 7) of the revival.
[7] She has married four times: to Jerry Rapp (1991–1993), Shaun Cassidy (1995–2003), Andy Cadiff (2003–2010), and William Newkirk (2014–2016).
During her marriage to Cassidy, Diol had a child named Juliet Jones Diol-Cassidy.