Smallville :

Clark and Lana discover an abandoned baby while investigating a crater in a cornfield and take him back to the Kent farm. But when the newborn, Evan, ages to a 7-year-old in a matter of days, Clark and Lana frantically search for a cure before the rapid-aging disease kills him.

Meanwhile, Genevieve suspects Lex has the Chinese Kryptonian artifact and orders Lionel to either recover it...or risk putting Lex in danger of his life.