Nurse Jackie (2009)

S4E4 Slow Growing Monsters

Jackie spots Grace with a boy at a carnival and intervenes, even going so far as to erase the boy's number from his phone. While there, Grace tells Fiona and Zoey that Jackie has gone to rehab. Later, Jackie attends an AA meeting with Charlie, only to discover he has relapsed. Meanwhile, Kevin pressures Eddie to reveal what Jackie was using during their affair and tells him to inform Jackie to say goodbye to her children. Jackie nearly relapses when a patient offers her medication, but after tossing it in a dumpster, she tries to retrieve it and ends up falling in. Ultimately, she climbs out and walks away without the pills. It's also revealed that Charlie is Dr. Cruz's son.