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Lois and Clark's parents show up to spend Christmas with them. Mindy Church recognizes the Intergang and creates a Kryptonic virus to make Superman die. Now, and for the first time in his life, Clark is sick, but this sickness can kill him unless Sam Lane helps him with a risky recovering process.
The episode was made available on the Lois and Clark: The New Adventures of Superman: The Complete Third Season DVD set, released on June 20, 2006.