Beware! Spoiler and theory territory awaits you. On the heels of box office hits like “Spider-Man: No Way Home,” “Shang-Chi,” “Black Widow” and “Eternals,” Marvel movie fans have much to look forward to in 2022. Three movies are slated for the 2022 Phase Four installment: “Doctor Strange 2,” “Thor 4” and “Black Panther 2.” On...