In the 2013 Disney movie "Frozen", when leading the search party for Queen Elsa, Prince Hans performs the role of the gallant hero perfectly; almost a little too perfect.
He risks his life in combat with the snow golem to get to Elsa, after the two Wesselton assassins have already gone ahead, then jumps into the fight between Elsa and the Wesseltons, stops Elsa from killing the defeated assassin and loosing all hope of redemption by giving sage advice ("Don't become the monster they fear you to be"), then rescues her life from the sneak attack by the other assassin, jumping an attacker who is wielding a loaded crossbow.
That just seems far too helpful for someone who later admits he has been plotting from the beginning to "arrange an accident" for the queen after marrying her sister.
He has no problems later on leaving Princess Anna to die, and attacking Elsa from behind.
So why did Hans pass up these perfect chances to get rid of Elsa?