An observed story part 1

Life itself is full of theatrical adventures and I love to people watch. Commuting to work by train I overhear a lot of snippets of conversations and have wondered if these snippets could be pieced together into a story. Take Monday,  as a man and I crossed on the stairs I heard the following fantastic sentence:
"When he died he left my brother and I a load of magic tricks but no instructions."
Instantly we have three characters; a desd magician and two brothers with a load of magic tricks they can't perform!
I then went to the cash point and sitting on there was a yellow envelope, looked like a birthday card, addressed to Peter. Is Peter one of our brothers?  Does he know he's lost his birthday card?
Fast forward to today and two men are waiting at the train station (our brothers maybe) when a woman appears from nowhere and starts shouting and swearing at them. Most of it seems to be aimed at the one (Peter?) but the other isn't so quick to get out of the way so gets hit twice! When the police arrive it transpires that her home has been broken into and she thinks they did it but our Peter character shouts before making his get away that she was with another man last night. So is this Peter's girlfriend?  Did they go out for his birthday and she went off with another man? Is that why he abandoned his birthday card at the cashpoint? And who broke into her house? I have no idea but it might be fun finding out.