police detective david jenkins. >> he described the suspect as stupid for having committed the murdern which he had. >> the tipster, nurse kim ramey, told police higgs said there was a much better way to commit murder. >> and then made specific reference to succinylcholine was a drug that was wiser to use because it was virtually undetectable. >> if used correctly it paralyzes respiratory muscles to allow the insertion of breathing tubes. but it is a powerful drug that if misused can cause organ failure and even death. it quickly dissipates from the bloodstream, leaving few traces. police launched a full-blown investigation. they quietly requested an arrest warrant and sent augustine's urine and blood samples to the fbi crime lab in virginia. two months later the fbi lab confirmed that kathy augustine had succinylcholine in her urine. in september 2006 chaz was arrested and charged with first-degree murder. higgs pleaded not guilty. >> your first reaction when the cops busted him? >> relief. >> but if kathy augustine did die by an injection of succinylcholine, it's even more disturbin