That's sad about Bethesda. The chain stores have driven so many of these good little places out of business.
Jon, I believe you're thinking of MysteryBooks on Connecticut, right off Dupont Circle. Not a branch; two different owners. MysteryBooks was where Bill Clinton bought his mysteries. I did a joint signing there once; I think we were all secretly hoping the presidential limo would pull up at the door, but it didn't.