Just after 1:30 a.m., the Bowie County Sheriff's department was called out to 33 Alpine Mobile Home Park. They were responding to a call that a stabbing had happened.
Two deputies arrived on scene and found Natasha Siem, 25, with a stab wound. She also said that her brother-in-law, Larry Hollaway, 23, was stabbing her husband Steven Hollaway, 27.
The stabbing occurred in the couple's home.
Both Steven and his wife were taken to the hospital, where Steven died shortly after arrival.
Seim is stable, but is in serious condition.
The Bowie County Sheriff's Department says Larry Hollaway was placed under arrest and is charged with Murder and Aggravated Assault with Deadly Weapon.
No more information could be released at this time.