vo5100 said: They dropped a few hints towards the Shepard's past and I think he used to be an alliance agent? And I also think Mal used to be a Christian but turned away from faith after serenity valley. What do you think?
Shepard Book’s past can be found in comic form, where his alliance affiliation is revealed.
As for Mal being Christian: I whole-heartedly think YES. In the pilot epsidoe, there’s a beautiful shot him kissing his silver cross in the Battle of Serenity Valley, there’s “You’re welcome on my boat, Shepard. God ain’t”, and the lovely “Do you mind if I say grace?” “Only if you say it out loud”. And for some icing on the cake, there’s this passage from the novelization of the movie (screenshot from the Kindle reading app):