Investigators released a highly critical report on the delayed General Motors recalls, targeting GM and government regulators. Jeff Glor has been covering this story extensively and has the details. Source

Actress Cobie Smulders has been playing one part for most of her adult life. Now, the costar of “How I Met Your Mother” is turning the page as the hit comedy ends its nine-year run. Anthony Mason sits down with the Canadian actress to talk about the end of the show, her early career as a model, and her future in the “Avengers” franchise. Source

Susan Spencer of “48 Hours” sits down with the writers of the “Late Show With David Letterman” to find out what some of the funniest people on the planet know about humor, and learns that being funny is serious work. Source

Film director Darren Aronofsky joins “CBS This Morning: Saturday” to discuss his controversial new film about one of the best known tales from the Bible’s book of Genesis, “Noah.” Source

Investigators say baggage handlers involved in a baggage theft ring at Los Angeles International Airport stole thousands of dollars worth of valuables ranging from expensive cameras to high fashion clothing. At least six people have been arrested so far. Brandon Scott reports. Source

General Motors is expanding its recall of cars because of defective ignitions switches that are blamed for more than a dozen deadly accidents. GM first learned about the faulty ignition switches in 2001 but didn’t start the recalls, which now includes 2.6 million vehicles, until 2014. Vinita Nair reports. Source

John Carter Cash – Johnny and June Carter Cash’s only son – talks about life with his famous father, in the recording studio and out on fishing trips. Cash is the producer of the new album of unreleased songs his father was working on back in 1981, “Out Among the Stars.” Source

John Carter Cash – Johnny and June Carter Cash’s only son – talks about growing up with his legendary parents, and how down-to-earth they were. Cash is the producer of the new album of unreleased songs his father was working on back in 1981, “Out Among the Stars.” Source

Four weeks into the search and investigation, the mystery of Malaysia Airlines flight 370 continues. CBS News aviation analyst Mark Rosenker joins “CBS This Morning: Saturday” to discuss the recent shift in the search for the missing plane. Source

UNICEF Goodwill Ambassador X Alfonso is transforming a former Havana cooking oil factory into a sophisticated multimedia visual experience. CBS News Portia Siegelbaum reports on how Havana’s art factory is making its mark on Cuba’s young people. Source