While lawyer Scott Marshall has pleaded guilty to a murder charge, his victim’s mother has filed an unusual wrongful-death suit against not only him but his parents and his 92-year-old grandmother.

In Cowey, et al. v. Marshall, et al., plaintiff Donna Cowey — the mother of Staci Michelle Montgomery and the representative of her estate — is suing “on behalf of all those entitled to recover under the Texas Wrongful Death and Survival Act” for Montgomery’s death. Gregory Gowan, a partner in Corpus Christi’s Gowan Elizondo, represents Cowey in the litigation.