Star Trek: Deep Space Nine Season 5 Episode 11 The Darkness and the Light

Odo receives a message from a former colleague, informing him that someone from his past is targeting and killing other former members of the Bajoran resistance. As Odo investigates the murders, he discovers that the perpetrator is someone who has a personal vendetta against him and his fellow members of the security force. The situation becomes more complicated when an explosion kills several Bajoran citizens, leading the investigations to intersect. Meanwhile, Kira deals with the aftermath of a failed negotiation between the Bajoran Provisional Government and a group of disgruntled farmers. As tensions rise throughout the station, Odo must race against time to prevent any further violence while also confronting demons from his past.