The 9-1-1: Lone Star season 4 finale offered a mix of tragedy and triumph as characters dealt with heartbreaking losses while simultaneously celebrating a beautiful marriage. Premiering in 2020 as a spinoff of the titular 9-1-1, Lone Star follows big-city firefighter Owen as he brings his modern philosophies down to Texas while still being haunted by a tragedy from two decades earlier. Part procedural, and part character-driven drama, Lone Star is noted for its heart and exciting storytelling, and it is yet another hit from the creative team of Brad Falchuk and Ryan Murphy.
https://screenrant.com/911-lone-star-season-4-finale-explained/