Today on TV

Major League Baseball (5:30 p.m., Ch. 13): St. Louis Cardinals at Texas Rangers, Game 5

Murder in the Roman Empire (6 p.m., National Geographic Channel): An attempt to solve the mystery of who murdered a 10-year-old child in 213 A.D.

Person of Interest (8 p.m, Ch. 2): Reese and Finch must investigate a judge known for his tough sentences, who wants nothing to do with their vigilante justice.

The Mentalist (9 p.m., Ch. 2): The body of a murdered woman washes up on an island.Today on TV

Major League Baseball (5:30 p.m., Ch. 13): World Series Game 5: St. Louis Cardinals at Texas Rangers.

How I Met Your Mother (7 p.m. Ch. 2): Gang recognizes similarities in significant other and their parents.

Dancing With the Stars (7 p.m, Ch. 4): Kristen Chenowith and the other contestants perform.

The Sing-Off (7 p.m. Ch. 5): The top eight groups perform hip-hop.

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2 Broke Girls (7:30 p.m. Ch. 2): Caroline tries to construct a bed.

Two and a Half Men (8 p.m. Ch. 2): Walden gets his divorce papers, but is comforted when he finds a woman that looks like his wife.

Mike and Molly (8:30 p.m. Ch. 2): Mike adds fuel to the fire when Molly has a fight with her family.

Hawaii Five-O (9 p.m. Ch 2): The special unit continues to fight crime in the islands.

Castle (9 p.m. Ch. 4): Castle and Beckett investigate the murder of a ghost hunter.

Prime Suspect (9 p.m. Ch. 5): Jane helps with Duffy's homicide and kidnapping investigation.