Episode 3.7 goes a little differently ... Sihtric infiltrates the Danes' camp, but Brida is on to him. When he doesn't show up by the trees with Skade as planned, Uhtred and Finan know he is in trouble. They just don't know yet how bad it's going to be ... Finan/Sihtric (Can be read as a platonic or beginning romantic relationship)
Episode 3.10 goes a little differently ... Father Beocca's house is on fire. When Sihtric realizes that Thyra might still be inside, he makes a rash decision. Of course, Finan has something to say about it. (Can be read as friendship or more)
Hell hath no fury like a woman scorned. Brida will make Uhtred regret the day he didn't kill her when he had the chance, for she knew him better than anyone else. She knew how to strike him where it hurt the most. The only question is, who would she go after first?