This is a double extension. It likely indicates the file was originally an .mkv container (which supports multiple audio/subtitle tracks) but has been renamed or transcoded to .mp4 for broader compatibility with devices like smart TVs and tablets. Key Cast Katheryn Winnick as Jenny Hoyt Kylie Bunbury as Cassie Dewell Jensen Ackles as Beau Arlen Reba McEntire as Sunny Barnes
Indicates the source is a "Web Download," typically ripped from a high-quality streaming service like Disney+, Hulu, or ABC.com. This usually ensures the best video quality without on-screen channel logos. Big.Sky.2020.S03E02.WEBDL.ITA.HD.mkv.mp4
In this episode, Cassie and Beau continue their investigation into a missing person, which leads them deeper into the mysteries of Sunny Day Excursions. Meanwhile, Sunny Barnes (played by Reba McEntire) goes to extreme lengths to protect a family secret, and Jenny and Beau find themselves on the trail of a murderer whose grisly work has links back to the Montana wilderness. This is a double extension