Ep 3. Lady Killer

In "Person of Interest" season 3 episode 3, titled "Lady Killer," the team is tasked with helping to protect a young teacher named Donna (played by Amy Acker) who has been receiving threatening messages and phone calls from an unidentified stalker. As they investigate, they discover that Donna has a troubled past that may be connected to her current situation.

At the same time, Reese (played by Jim Caviezel) becomes involved with a new love interest, a beautiful psychologist named Iris Campbell (played by Wrenn Schmidt) who is helping him deal with his PTSD and guilt over Carter's death. However, their budding relationship is threatened when Iris becomes the target of the same stalker who is after Donna.

As the team races to uncover the identity of the stalker, they uncover a surprising twist that puts Donna's life in danger and forces Reese to confront his own personal demons.

Meanwhile, Finch (played by Michael Emerson) continues to struggle with the morality of their work, questioning whether they are truly making a positive impact on the world or simply becoming pawns in a larger game.

Overall, "Lady Killer" is an intense and emotional episode that showcases the show's talent for weaving together complex storylines with compelling character growth. With its surprising twists and turns, it will keep viewers on the edge of their seats until the very end.