how best would you like this guy kiled?

I'm writing a book, and need to kill off a character in the first chapter (it sets up for the mystery in the rest of the story).

Anyway, its london, late 1800's, and to cut a long story short, a rich, mysterious adventurer/inventor has arrived at his daughters house as she's throwing a fancy party. i'm thinking:

1) He smokes a cigar laced with poison. (i'm thinking of having him be found in a locked room too).

2) the crystal chandelier comes loose and falls on him.

3) the killer poisons a bottle of port gifted to him.

4) it's a costume party and the killer silently stabs the man in the crowd and slips away without anyone knowing or

5) when the man steps outside for a smoke he's strangled with his tie