James Marsters is playing the husband in the movie based on the play Venetian Heat (the upi article says the movie is titled Italian Heat, but I'm skeptical). In the play, the husband is seduced by the older of the two deserters. If the remaining big names we know are in the movie play the two deserters, that means Jacobi and Marsters portray a couple. Wheeeeeee! Wheeeeee!
Sean Bean would then be the younger deserter, who seduces Marsters's character's wife.
Whee! Such pretty, such lack of subtext, such oh!