Double Trouble

Two sisters.

One disaster.

First things first: I'm the bad twin. While my sister, Marcia, has the perfect family in the perfect suburb, I've been making my living as an Internet advice columnist and designing Web sites in my downtown loft. I always thought I had the right answer - and hair color - for any occasion. That is, until Marcia ran up loads of debt and ran out on her husband and kids, and I was left helping to pick up the pieces. Her husband, James, is a …