Nancy Ticotin

After a deadly explosion rocks a construction site in New York City, Broyles solicits the aid of our unlikely threesome to investigate a strange cylinder mysteriously found at the scene and completely unharmed by the surrounding devastation. After Olivia uncovers an unbelievable commonality between disturbing events, Dr. Bishop takes matters into his own hands and Peter is forced into field duty, it almost seems as if the untraceable object is triggering the series of odd behaviors, unexpected events and surprising revelations in "The Arrival."

A sharp-eyed photo developer puts Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) on the tail of a seemingly harmless piano instructor (guest star Kent Broadhurst) who molests his students -- all boys -- but their prime witness is an unstable young man (guest star Wilson Jermaine Heredia) who recoils when he sees the suspect's videotape of his shame from years before. Even more disturbing for the detectives are more scenes from other tapes that could compromise their case and cause more heartache. Richard Belzer, Dann Florek and Michelle Hurd also star.

A young woman visiting from Buffalo claims that her car was stolen outside a Manhattan convenience store with her baby still buckled in the backseat. Benson (Mariska Hargitay) and Amaro (Danny Pino) get as much information as they can from the anxious mother and her boyfriend at the police station, while Fin (Ice-T) and Rollins (Kelli Giddish) track their path from Buffalo for clues. When the parents' stories don't add up, the detectives must uncover what really happened to the missing baby, and the truth surprises everyone. Also starring Dann Florek (Captain Donald Cragen). Special appearances by Diane Neal (ADA Casey Novak) and Tamara Tunie (M.E. Melinda Warner).

Amaro’s father, Nicolas (guest star Armand Assante), asks his estranged family to attend his marriage to 28-year-old Gabriella Nuñez (guest star Katty Velasquez), and despite their volatile past, all but Amaro agree. When a fight breaks out at the wedding and Nicolas is put in handcuffs, Amaro becomes a witness in a case that could expose family secrets and tear his family apart.

As Alicia looks for a way to have a judgment thrown out following a shocking guilty verdict, she also begins to feel the consequences of decisions in her personal life.