A serial killer from Liz’s past strikes again while Red hunts for whoever betrayed him.

Piper starts a prison newsletter with the help of Healy and a few other inmates; Vee launches an entrepreneurial enterprise.

Love is in the air as the inmates prepare for a Valentine’s Day party; Red makes and intriguing new discovery. Larry asks Piper to be his prison mole.

A bathroom turf war sees deeper lines drawn in the sand as Gloria and Vee go head to head. Piper receives devastating news.

Sophia gives the women a much-needed lesson in female anatomy; Morello takes a detour; Larry makes some life changes.

A mock Job Fair provides Taystee with a chance to show off her business smarts; Red feels isolated from her prison family.