Among the most influential of TV figures? Sir Arthur Conan Doyle, the creator of Sherlock Holmes. He's the great mustachioed granddaddy of the contemporary crime and medical procedural, having shown Hollywood how an observant, intelligent, obsessive, and arrogant guy can follow a trail of crumbs to the culprit. So many current shows - the "CSI" franchise, "House," "Life" - play like homages to the deduction-crazed sleuth of Baker Street who's forever a step ahead of the rest of us.
"The Mentalist," tonight at 9 on Channel 4, revolves around yet another offbeat, Holmesian crime-solver. The CBS show has very little dramatic heft or distinction, but it's wily and brisk enough to engage you for an hour. The big twist: Our brilliant hero, Patrick Jane, is a former phony psychic who now assists the California Bureau of Investigation's homicide squad. Unlike the heroine of "Medium," he no longer lays claim to any supernatural powers, just an intense love of logic. Ever since his fake-psychic career led to personal tragedy, he has been in fraud recovery and do-good mode.