Extend the Story - Add a Room

You arrive at the old house, your Aunt lives in, in Queens and use a tree to get changed into your civvies. Your Aunt has lived alone since your Uncle was shot by a burglar YOU allowed to escape. Except when she went out with Lou Tchaikovski. But he was killed by another one of your enemies. And her friends all moved away after she was always collapsing or being held hostage or going out with men with giant robot arms.
She fusses over, as she invites you in.
"Oh dear, why don't you dress up warmer. You'll catch your death out there in July like this. Where's that lovely sweater I made for you. Why don't you keep your mittens tied to your......"

*******************

"...said I know you know, but the hat was simply to die for and I don't mean to sound like an old...."

********************

Your dangersense stops buzzing and it's safe to listen again.
"...and this letter arrived in the post. The return address on it says it's from that nice Stacey Gwen. Whatever happened to her...."
The words hit you like a bucket of ice water: Stacey Gwen. Murdered before your eyes by the Pink Troll.
Your aunt holds out the letter. You leave.
Later, standing dramatically at the top of a tall building you:

Open the sinister Pandora's Box type envelope in the naive belief that some good will ever come of this.