In the preview, Vincent D’Onofrio’s Wilson Fisk, a.k.a. Kingpin, asks Charlie Cox’s Matt why he stopped being a vigilante, to which Matt responds, “A line was crossed.” While Matt doesn’t provide any further context,

"Daredevil: Born Again" sees Charlie Cox back as Matt Murdock to fight a creepy serial killer, while also dealing with Kingpin.

Daredevil: Born Again is the forthcoming MCU series scheduled to premiere this March on Disney+. A sequel to the Netflix Daredevil series, Born Again sees Charlie Cox reprise his role as Matt Murdock while Vincent D’Onofrio also returns to play Wilson Fisk/Kingpin.