Deneb Kaitos II

Deneb Kaitos II (more commonly known by the simpler name Deneb II) is a Class M planet located in the Deneb Kaitos system. It was colonized by Deneb V in the 21st century. (Star Trek: Star Charts)

Sometime prior to 2266, Deneb II was the site of several murders of women committed by the Redjac entity, known as "Kelsa" at the time. (TOS episode: "Wolf in the Fold")