Inspector Gadget and Dr. Horrible's Sing-Along Blog Crossovers
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Fourth Time's the Charm by Sogo reviews
"The first time they meet, he is naive and she is innocent." They came from very different places, but they were always the same. A story of four meetings.
Rated: T - English - Drama - Chapters: 1 - Words: 6,220 - Reviews: 1 - Favs: 2 - Published: 2/6/2017 - Dr. Horrible/Billy, Penny - Complete