lee gardner will be executed by firing squad. some people deserve to die. we have an obligation to kill them. reporter: this september gail owens is scheduled to die by lethal injection. i ve never seen a case that has this many. reporter: later on sunday morning, we take you behind prison walls where the death penalty is personal. osgood: bugs are the bane of many a summer picnic. could they ever be the stuff of beautiful art? the answer is yes, as our john blackstone will show us. i was phobic of insects growing up. the first half of my life i could not stay far enough away from bugs. reporter: now christopher marley s life is nothing but bugs. this is from a pool in new guinea. this is is from the philippines. this is from peru. reporter: bugs he transforms into art. learning to find the beauty in things that creep and crawl and bite later on sunday morning. osgood: tonight is tony night here on cbs. and few performers are more at home on broadway than