(written from a Production point of view)
She is best known for her role as Connie Valenzuela in the 1987 hit biographical movie La Bamba, which also featured Star Trek: The Next Generation guest actors Sam Anderson and Noble Willingham. The following year, she and her La Bamba co-star Lou Diamond Phillips had roles in the popular drama Stand and Deliver.
She made her film debut in the 1979 comedy The In-Laws, co-starring Richard Libertini and Ed Begley, Jr. The following year, she appeared with her future Undiscovered Country co-star Paul Rossilli in the comedy Serial (also featuring Sally Kellerman). Her other film credits include Cannery Row (1982), About Last Night… (1986) with Ada Maris and Sachi Parker, and Family Business (1989), and the 1997 science fiction made-for-television movie Invasion, with Neal McDonough and her Undiscovered Country co-star Kim Cattrall.
DeSoto also made guest appearances on such TV shows as Barney Miller (with Ron Glass, Gregory Sierra, and James Gregory), Murder, She Wrote (with William Windom), and Quantum Leap (with Scott Bakula and Dean Stockwell). She was also a regular on The Redd Foxx Show in 1986, and on the soap opera The Bold and the Beautiful in 2001.