2 0 1 7 . ▁Additionally , ▁Jac ▁has ▁made ▁multiple ▁appearances ▁on ▁Hol by ▁City ▁sister ▁shows , ▁Hol by Blue ▁and ▁Cas ual ty . ▁ ▁Story lines ▁Jac ▁arriv es ▁at ▁Hol by ▁City ▁Hospital ▁as ▁part ▁of ▁a ▁team ▁performing ▁a ▁hem ic orp ore ct omy . ▁She ▁is ▁initially ▁un success ful ▁in ▁se cur ing ▁a ▁permanent ▁position ▁as ▁a ▁registr ar , ▁but ▁returns ▁to ▁the ▁hospital ▁in ▁this ▁capacity ▁several ▁weeks ▁later . ▁Jac ▁develop s ▁a ▁rival ry ▁with ▁her ▁fellow ▁registr ar ▁D iane ▁Lloyd ▁( Pat ric ia ▁Pot ter ), ▁which ▁intens ifies ▁when ▁they ▁both ▁apply ▁for ▁the ▁same ▁consult ant ▁post . ▁Ne ither ▁are ▁successful , ▁but ▁Jac ▁is ▁disappoint ed ▁when ▁D iane ▁is ▁later ▁promoted ▁above ▁her , ▁to ▁loc um ▁consult ant ▁and ▁later ▁to ▁permanent ▁consult ant . ▁ ▁Unable ▁to ▁co pe ▁with ▁the ▁pressure ▁of ▁his ▁job , ▁card i oth or ac ic ▁surg ical ▁registr ar ▁Joseph ▁By r ne ▁( Lu ke ▁Roberts ) ▁accident ally ▁over d oses , ▁and ▁is ▁saved ▁by ▁Jac . ▁She ▁becomes ▁rom ant ically ▁involved ▁with ▁him , ▁hoping ▁to ▁ing r ati ate ▁herself ▁with ▁his ▁influ ential ▁father , ▁Lord ▁By r ne ▁( R on ald ▁Pick up ). ▁T aking ▁this ▁further , ▁Jac ▁later ▁lies ▁to ▁Lord ▁By r ne , ▁claim ing ▁that ▁she ▁and ▁Joseph ▁have ▁separated , ▁resulting ▁in ▁Jac ▁sleep ing ▁with