Criminal Minds hits the century mrk tonight.

The slick procedural series, which airs on CBS and CTV and is a top-10 show in Canada, appropriately has chosen 100 as the title of its 100th episode.

Tonight, the FBI’s Behavioural Analysis team (BAU) races to help Hotchner (Thomas Gibson) find a dangerous man nicknamed The Reaper (guest star C. Thomas Howell) before he can harm Hotchner’s family. Among the series regulars is Canadian A.J. Cook, who plays Jennifer (J.J.) Jareau.

Criminal Minds is in its fifth season and while it always has flown under the radar publicity-wise, it has developed into a reliable ratings behemoth.