In which the crux of the biscuit is the apostrophe.
Memory Alpha says: Enterprise explores Data's home planet, Omicron Theta. They find his brother, and the dark secret he carries. (Please click the Memory Alpha link for detailed information.)
My Review
Of course I'll have a lot to say about this one, because it's the first really Data-centric episode, and to me TNG is a show about Data. It also introduces one of my favourite characters, and one I feel is sadly underused, Data's villainous older brother Lore. In the early planning stages, the new android was going to be female (a gynoid, really) and a love interest for Data (so, um, presumably not his sister, although I suppose if you want to be really rational about it it's not exactly incest if there's no DNA or shared experience of a familial relationship involved) but Brent Spiner suggested the ol' evil twin routine.
