, ▁Mary ▁Frances . ▁ ▁Clay ▁shares ▁a ▁special ▁bond ▁with ▁Grace . ▁Leon ▁Co ole y ▁( B oke em ▁Wood bine ): ▁An ▁in mate ▁on ▁death ▁row ▁for ▁killing ▁a ▁prison ▁guard , ▁Leon ▁was ▁another ▁one ▁of ▁Earl ' s ▁charges , ▁and ▁he ▁bond ed ▁with ▁Grace ▁and ▁her ▁family ▁before ▁his ▁death . ▁ ▁Leon ' s ▁execution ▁was ▁finally ▁carried ▁out ▁at ▁the ▁end ▁of ▁the ▁second ▁season . ▁Father ▁Johnny ▁Han ad ark o ▁( Tom ▁Ir win ): ▁Grace ' s ▁brother , ▁who ▁is ▁also ▁a ▁Catholic ▁priest . ▁Johnny ▁wants ▁Grace ▁to ▁draw ▁closer ▁to ▁God , ▁but ▁is ▁imp at ient ▁with ▁her ▁behavior ▁and ▁has ▁difficulty ▁bel ieving ▁an ▁ang el ▁vis its ▁her . ▁Ne ely ▁Lloyd ▁( Y a ani ▁King ): ▁Ne ely ▁is ▁a ▁young ▁drug ▁add ict ▁who ▁is ▁also ▁watched ▁over ▁by ▁Earl , ▁and ▁beginning ▁in ▁the ▁third ▁season ▁Grace ▁reaches ▁out ▁to ▁her . ▁Henry ▁Silver ▁( Mark ▁L . ▁Taylor ): ▁Henry ▁works ▁with ▁Rh etta ▁in ▁for ens ic ▁sciences , ▁special izing ▁in ▁path ology . ▁ ▁Rec urr ing ▁characters ▁Grace ' s ▁family ▁Leo ▁Han ad ark o ▁( P atr ick ▁St . ▁Es prit ): ▁Grace ' s ▁fire fig h ter ▁brother , ▁who ▁has ▁the ▁shared ▁experience ▁with ▁Grace ▁of ▁the ▁tra um atic ▁search - and - res cue ▁efforts ▁on ▁the ▁day ▁of ▁the ▁Alfred ▁P . ▁Mur rah ▁Federal ▁Building