Trial For A Man Charged With First Degree Murder In Johnson City Has Been Delayed After A State Witness Became Ill. 25 Year Old Dallas Sarden Is Charged In The August 2015 Death Of 49 Year Old Karen Parker Inside Her Nathaniel Drive Apartment. Sarden Is The Second Person To Be Tried In The Killing. Aaron Garland Was Convicted Of First Degree Murder And Sentenced To Life In Prison. His Trial Is Set For April 9th.