Isabel Santiago

Things get personal for Danny when Luis Delgado (Lou Diamond Phillips), the drug cartel hitman responsible for torching his house, resurfaces. Also, an attack on an officer in the line of duty directly impacts a member of Frank’s team; Eddie reluctantly introduces Jamie to her mother, Lena (Christine Ebersole); and Erin deals with the consequences of her new role as boss.

After someone breaks into Luis Delgado's (Lou Diamond Phillips) home and kills his wife, Luis and Danny team up to take down the vicious murderer who may also be responsible for Linda's death. Also, Frank finally meets Eddie’s mother, Lena (Christine Ebersole), and Jamie and Erin are at odds after Jamie seeks her help charging a man who confessed to him while under the influence.

Michael works double duty trying to save a pregnant personal friend he recently diagnosed with a brain tumor and a little boy with sickle cell disease.