Do I need to watch earlier episodes before “24 Hours”?

Watching earlier episodes in season 4 helps you follow the plot and character arcs leading into this episode.

Watch The Secret World of Alex Mack Season 4 Episode 18 Online

Q: Where can I watch “The Secret World of Alex Mack” Season 4 Episode 18 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

“24 Hours” — Watch "The Secret World of Alex Mack" Season 4 Episode 18 online in HD for free. Check streaming providers, cast, and episode details.

Dec 4, 1997 Season 4 Episode 18 24 min TV-PG

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The Secret World of Alex Mack Season 4

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Season 4 Episode 18 — Aired on Dec 4, 1997 • runs about 24 minutes.

Notable cast/guest names in this episode include Larisa Oleynik, Meredith Bishop, Darris Love, Michael Blakley.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch The Secret World of Alex Mack Season 4 Episode 18 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

After coming to school like every day in her life, Alex notices that her parents, friends and teachers have started to act strangely. First she gets into detention with no reason and after escaping, everybody starts haunting her. But, what is really going on?