aeman presley , 34 , faces charges stemming from a string of murders that officials say he committed last year .
his alleged victims were calvin gholston , 53 ; dorian jenkins , 42 ; tommy mims , 68 ; and karen pearce , 44 .
presley had reportedly moved from los angeles to atlanta to restart his acting career , but bought a gun with the stated intent of using it for robbery .
instead , after presley killed gholston , he began seeking out others to kill .