If you had to pick one person to embody the word "droll" -- which itself embodies the British approach to humor -- you could do no better than Leo McKern. He returns to PBS in a new series of "Rumpole of the Bailey" mysteries.
* "Due South" (8 p.m.-9 p.m., WJZ, Channel 13) -- Fraser (Paul Gross) delivers a package to the wrong person, and finds himself mistaken as the recipient's lover -- by her husband, who wants revenge. CBS.
* "Living Single" (8:30 p.m.-9 p.m., WBFF, Channel 45) -- Khadijah (Queen Latifah) encounters former champion boxer Roberto Duran, who plays himself, as she races a reporting rival (Kadeem Hardison) to uncover a boxing scandal. Fox.
* "Mystery! Rumpole of the Bailey" (9 p.m.-10 p.m., MPT, channels 22, 67) -- Star Leo McKern says he tried not to return to his role as novelist John Mortimer's rumpled barrister. PBS confirms that the six new episodes that begin tonight (with "Rumpole and the Children of the Devil") are indeed the last of the series, which began in 1980. (MPT follows the new show with a repeat episode from a previous series, "Rumpole and the Last Resort.") PBS.
* "Seinfeld" (9 p.m.-9:30 p.m., WBAL, Channel 11) -- Jerry buys a new sofa, and Elaine goes soft for the moving man (David James Elliott), in this repeat. George (Jason Alexander) also joins a book club in order to please a girlfriend, but he tries to get by without reading. NBC.
* "48 Hours" (10 p.m.-11 p.m., WJZ, Channel 13) -- Dan Rather and his crew boot up and sign on to the Information Highway. This time they're exploring the technology of computer communication. CBS.
* "Snoop: Straight from the Dogpound" (6:30 p.m.-7 p.m., BET) -- Should he be a role model for children? Good question, and it is among those asked by this half-hour documentary special. Award-winning rap star Snoop Doggy Dogg goes on trial in California next week on charges of first-degree murder.
* "The Dirty Dozen" (8 p.m.-11:15 p.m., TNT) -- A classic World War II film. The mud-slogging 1967 movie, with Lee Marvin, Charles Bronson and Donald Sutherland, teams a gang of convicted criminals, each with special skills, for a desperate mission. It spawned a sequel (to be screened on TNT immediately following) and a short-lived TV series on Fox a few years ago.