Where can I watch “The Flash” Season 1 Episode 16 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).

Do I need to watch earlier episodes before “Deadly Nightshade”?

Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch The Flash Season 1 Episode 16 Online

“Deadly Nightshade” — Watch "The Flash" Season 1 Episode 16 online in HD for free. Check streaming providers, cast, and episode details.

Mar 30, 1991 Season 1 Episode 16 48 min TV-PG

8.5 ★ ★ ★ ★ ★

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The Flash Season 1

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Season 1 Episode 16 — Aired on Mar 30, 1991 • runs about 48 minutes.

Directed by Bruce Bilson.

Written by Howard Chaykin, John Francis Moore.

Notable cast/guest names in this episode include John Wesley Shipp, Amanda Pays, Alex Désert.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch The Flash Season 1 Episode 16 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

There's a new vigilante in town, the Deadly Nightshade, who fights crime by killing criminals. The Flash and the original Nightshade team up to take him down.