'1923' Stars React to THAT Theory About John Dutton's True Lineage

We're a long time into it, so by now, Yellowstone fans are experts at drawing family trees—and they’ve been working overtime since the emotional Season 2 finale of 1923. In the final episode, Alex (Julia Schlaepfer) gives birth to her and Spencer Dutton’s son, John, just before tragically dying in a hospital bed. But even in death, Alex leaves behind one of the biggest lingering questions in Taylor Sheridan’s ever-expanding saga: is this newborn John the father of Kevin Costner’s John Dutton III? Well, both Schlaepfer and co-star Brandon Sklenar, who plays Spencer, have now addressed that theory—and while they don’t confirm anything, they’re certainly intrigued by the possibility.