Fact -
Phantom is a ladykiller.
Fact - there are more than two females playing.
Fact - it is dark and spooky.
Correlation -
Phantom will want to hold all the girls' hands (see Fact 3).
Fact - humans have two hands.
Fact - spiders have X arms, where X is 8 minus the number of legs any cruel schoolchildren have pulled off of them.
Assumption - Shelob eats schoolchildren.
Correlation - Shelob will have X legs, where X > 2 (and is most likely 8).
Fact - a human being with 2 hands can not hold the hands of X females, where X > 2.
Therefore,
Phantom is Shelob. Game over.