Ryan (from "Stray") returns and Clark has to save him from Dr. Garner of the Summerholt Research Facility. Meanwhile, Aunt Nell leaves Smallville, and Lex wants to expand the plant but runs afoul of the mayor.
|Catherine Lough Haggquist||Guest Star|
|Mark Gibbon||Guest Star|
|Martin Cummins||Guest Star|
|Michael St. John Smith||Guest Star|
|Mitchell Kosterman||Guest Star|
|Robert Seckler||Guest Star|
|Ryan Kelley||Guest Star|
|Sarah Jane Redmond||Guest Star|
|Sylvesta Stuart||Guest Star|
|William B. Davis||Guest Star|
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