On the fifth season premiere of CSI: Miami (10:00-11:00 PM, ET/PT), Horatio and Delko are close to catching Riaz, Marisol's killer, in Rio. There, Horatio reunites with Yelina and learns that his brother Raymond is in too deep undercover in a drug ring run by Riaz.

To make matters worse, Horatio's nephew, Ray Jr., is working as a drug mule for Riaz, smuggling drugs into the U.S. Now, with the stakes set high, Horatio must catch Riaz before he takes the life of another member of Horatio's family. Scenes were shot on location in Rio de Janeiro, Brazil.


* Andrea Anders, Jon Bernthal, Lizzy Caplan, Jesse Tyler Ferguson, Heather Goldenhersh, Julie Halston, Sam Harris, David Keith, Sean Maguire, Lucy Punch and Jason Ritter star in The Class, a new comedy about a group of twenty-somethings who are inextricably bound together by sharing the same third grade class, premiering tonight (8:00-8:30 PM, ET/PT) on CBS.

In the premiere episode, Ethan Haas (Ritter) is head-over-heels in love with his girlfriend, for whom he has planned the ultimate surprise engagement party -- a reunion with the third grade class of Philadelphia's Woodman Elementary School to celebrate the 20th anniversary of the day they met. The party brings an eclectic group of old friends, former couples and acquaintances together and, although the outcome is far from what Ethan expected, the group has an opportunity to reconnect after two decades, mend old wounds and develop new friendships.

* On the second season premiere of How I Met Your Mother, (8:30-9:00 PM, ET/PT) on CBS, while Marshall begins his summer forlorn over his break-up with Lily, Ted and Robin couldn't be happier with their budding. When newly single Lily takes off for San Francisco, Ted, Barney and Robin do their best to cheer up a dejected and depressed Marshall. Despite the support of his pals, Marshall suffers a set back when he thinks Lily is back in New York.

* The second season of The New Adventures of Old Christine (9:30-10:00 PM, ET/PT CBS) kicks off tonight. Since new Christine broke up with Richard, he's been spending a lot of time at Christine's house, leading Ritchie to believe that his parents are back together. When Christine tells Richard that Ritchie told this to his new teacher, Richard suggests that they give their relationship another try.

* Now that newlywed Alan has moved out, Charlie returns to his bachelor lifestyle, on the fourth season premiere of Two And A Half Men, tonight (9:00-9:30 PM, ET/PT), on CBS. In the wake of his second divorce, Alan melts down. Charlie, family and friends are no help.