Discussions about money can lead couples into 'treacherous' territory.
They were not prepared to hike over such 'treacherous' terrain.
The snow made their hike all the more 'treacherous'.
(..) For us. Yes. We meant "for us." Gollum. Gollum. The precious will be ours... ...once the Hobbitses are dead! You treacherous little toad! - No! No! Master! - No, Sam! Leave him alone! I heard it from his own mouth. He means to murder us. Never! Sméagol wouldn't hurt a fly. (..)2003 The Lord of the Rings: The Return of the King