The Thirteenth Year poster

Movie · 1999

The Thirteenth Year

Released 15 May 1999 More from 1999 → Letterboxd ↗ · TMDB ↗

A teen learns that his birth mother is a mermaid after he begins to grow fins and slimy scales on his thirteenth birthday.

FR·01

How old were they?

Oldest first
Joel McKinnon Miller
as Hal
39
Brent Briscoe
as Big John
37
Brian Haley
as Coach
36
Kristen Stewart
as Girl in Fountain Line (uncredited)
9
FR·02

The numbers

Computed from the cast above
30years between the oldest and youngest billed
39Joel McKinnon Miller — oldest on the call sheet
9Kristen Stewart — youngest billed
30average age of the credited cast
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