A Man Alone

S1 E4: Odo, the station's mysterious, gruff and yet incredibly fair shape-shifter constable, falls under suspicion for a Bajoran's baffling murder -- and xenophobic hatred rears its ugly head in the station's rush to judgment. Meanwhile, Chief O'Brien's wife Keiko opens a school for the station's youth, and convinces Quark's brother Rom to send his own son, Nog.