Smallville's 50th episode takes us back to the '60s to solve a case. After Lana visits her great-uncle in prison for his wife's murder 40 years ago, she tells Clark and inspires him to check the cave for a memory relic left by his father Jor-El. As Clark is reliving "Joe's" memories he starts to see that Lana's great-uncle may have been framed by a Luthor.

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