Tom Riddle Goes Home

[Gopal B]

No: HPFGUIDX 138391

Carodave:
When Tom Riddle first visits the Gaunt house, he meets
Uncle Morfin for the first time.  He enters the house, and
immediately begins to speak to Morfin...in Parseltongue.  How does he know to do this?  
<snip>

Gopal:
Thats because Uncle Morfin shouts in parseltongue
"YOU, WHY ARE YOU HERE" assuming its Tom Riddle Sr.
Thats when Tom Riddle says "stop" in parseltongue.

Gopal.