Steffy’s marriage is on the line.

Next week on “B&B,” Ridge and Brooke go behind locked doors, Katie catches Thorne off guard and Steffy asks her doctor who the father is. Read Soaps.com’s B&B spoilers to learn what Steffy’s doctor discovers.

Follow Soaps.com on Twitter, Soaps.com on Facebook, and Soaps.com on Instagram.

Photo credit: CBS

– Lori Wilson