(ALL TIMES ET)

10PM | CBS
Blue Bloods – Someone’s staring down the business end of a beatdown when Frank is the target of an assassination attempt, and detective son Danny goes looking for the perp to a) administer the aforementioned beatdown and b) determine if Frank was a random target or if the baddie intended to kill the NYPD Commissioner.

8PM | FOX
Kitchen Nightmares – Chef Gordo visits the Grasshopper Also Irish pub in New Jersey.

8PM | THE CW
Smallville – Still giddy about the news that Michael Rosenbaum will return for the May 13 series finale? Another fan-pleasing event: Tonight, Lois advises Clark to don a disguise to protect his identity.

8PM | ABC
Supernanny – Jo‘s help is desperately needed, as a military wife whose husband is deployed in Afghanistan is trying to raise four adopted children, all under the age of 7, on her own.

9PM | CBS
CSI: NY – The CSIs are torn when a violent serial rapist is found murdered. Do they really want to catch the vigilante who killed the creep?

9PM | TEENNICK
Degrassi – Bianca wants to be with Drew, but a popular couple they do not make.

9PM | FOX
Fringe – Peter and Olivia try to heal the rift between them, as the team visits the home of a woman mourning the death of her husband.

9PM | ID – SERIES PREMIERE
The Injustice Files – The series investigates cold cases from the Civil Rights era, beginning with the unsolved 1967 murder of Wharlest Jackson, a man who was killed by a bomb in his truck after he accepted a promotion at a local factory in Mississippi.

9PM | THE CW
Supernatural – Dean rushes to save Lisa from impending doom, while Sam digs into a cluster of murders that may have been the result of some cruel practical jokes the dead dudes were playing on a female co-worker.

10:30PM | IFC
Portlandia – The town is excited about a new music and film festival. Fans of the show, meanwhile, should be excited that IFC just ordered a second season of the Fred Armisen comedy.

Worth flipping to during commercials:
– Who Do You Think You Are? (8PM, NBC) helps Rosie O’Donnell dig into her late mother’s family history;
– It’s a “redneck carnival” affair on My Big Redneck Wedding (8:30PM, CMT), which includes a dunk tank filled with beer;
– Obi-Wan and Anakin try to spring a Jedi general from a Separatist prison on Star Wars: The Clone Wars (8:30PM, Cartoon Network);
– Primetime: What Would You Do? (9PM, ABC) finds out how many people will say yes when asked by teens to purchase alcohol for them in a liquor store;
– Karl doles out romantic advice and tales of his kidney stones on The Ricky Gervais Show (9PM, HBO);
– On Bar Karma (10PM, Current), a children’s author comes to the bar, where he finds out his latest book is going to inspire an act of terrorism;
– Gold Rush: Alaska (10PM, Discovery) wraps its first season;
– Kevin Smith is the interview guest on Real Time With Bill Maher (10PM, HBO).

And the late-night line-up:
– The Late Show with David Letterman (11:35PM, CBS): David Spade, Andy Kindler and Lukas Nelson and Promise of the Real;
– The Tonight Show with Jay Leno (11:35PM, NBC): Mark Harmon and 30 Seconds to Mars;
– Jimmy Kimmel Live (12:05AM, ABC): Adam Sandler and Bobby Flay (REPEAT);
– Late Night with Jimmy Fallon (12:35AM, NBC): Patrice O’Neal, Ann Curry and Raekwon featuring Ghostface Killah and Jim Jones;
– The Late Late Show with Craig Ferguson (12:37AM, CBS): Lily Tomlin and D.J. Qualls;
– Last Call with Carson Daly (1:35AM, NBC): Patton Oswalt.

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• Filed in Blue Bloods, Late Night, TV Picks
• Tags: Blue Bloods, CSI: NY, Degrassi, Fringe, Kitchen Nightmares, Portlandia, Smallville, Supernanny, Supernatural, The Injustice Files, Tom Selleck, Wharlest Jackson