A new episode of “20/20” will air on Friday, Jan. 3. The new episode will air at 9 p.m. ET and will be broadcast on ABC.

Here’s where to watch the Luigi Mangione ABC 20/20 documentary, including how to stream the documentary without cable.

NEW YORK -- How did Luigi Mangione go from honor student and Ivy League to alleged killer? The all-new "20/20" special ...

ABC News Studios primetime one-hour program, "Manhunt: Luigi Mangione and the CEO Murder – A Special Edition of 20/20" ...