87. Sons of Mogh
Summary
Kurn, Worf's younger brother, has been ousted from the Klingon High Council due to Worf's dishonor. Now he shows up on DS9, demanding that Worf restore his honor by giving him Mauk-to'Vor, a ritual killing. Worf attempts to do so, but is stopped by Dax and Odo. Meanwhile, O'Brien and Kira discover that the Klingons have placed cloaked mines around Bajoran space. Worf and Kurn obtain their precise locations, after which Worf decides to grant his brother's wish, after a fashion. He has Bashir alter Kurn's features and wipe his memory, giving him a new identity.
Summary provided by The DS9 Encyclopedia and Lexicon by kind permission of Tracy Hemenover.