It has been an extraordinary week in American history, punctuated by the first-ever arrest of a former U.S. president. CBS News chief political analyst John Dickerson and presidential historian Douglas Brinkley join "CBS Mornings" to examine the parallels to Richard Nixon's resignation from office in 1974, and the lessons we may be able to learn from the past.

Bradley Arrowood is a dog trainer for CBS Mornings' lead national correspondent David Begnaud, but before his career took off, he was sentenced to life in prison without the possibility of parole. David sat down with Arrowood who told him how working with dogs helped him receive a second chance, and also with former California Governor Jerry Brown, who played a role in Arrowood's release while seeking a second chance of his own.

"48 Hours" investigates the case of Kassanndra Cantrell, who vanished in 2020. Detectives discovered surveillance video of a mysterious man in a fedora leaving her car.

From the 1980s classic video games to the CG bonanza of the new movie, Mario has evolved but his appeal lasts.

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