S04E18How I Met Your Mother · Season 4
How I Met Your Mother season 4 episode 18: Old King Clancy
Aired 23 March 200921 minRated TV-14
Where to watch How I Met Your Mother Season 4 in Australia
How I Met Your Mother season 4 is streaming in Australia on Disney+ (subscription, listed for the whole show). You can also buy it on Apple TV from $24.99 and Prime Video Store from $24.99.
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Availability checked 16 November 2026.
What happens in “Old King Clancy”
Marshall and Barney lie to keep Ted from finding out the headquarters he'd been hired to design for GNB has been cancelled.
Episode summary: TMDB.
Before you watch
- It is episode 18 of 24 of season 4, so watch episodes 1 to 17 first.
- It runs about 21 minutes.
- Directed by Pamela Fryman, written by Jamie Rhonheimer.
- TMDB users rate it 7.6 out of 10 (35 votes).
How I Met Your Mother trailer
The official trailer for the series (no preview of this episode has been published).
Play video: How I Met Your Mother trailer
Cast and crew of this episode
- Director
- Pamela Fryman
- Writer
- Jamie Rhonheimer
- Guest stars
- Aaron Hill as The Frozen SnowshoeBryan Callen as BilsonDarlena Tejeiro as LouisaAynsley Bubbico as MayaStephen Kearin as ArthurWilliam Walton as Roy
Credits: TMDB.
More from How I Met Your Mother Season 4
Every episode of Season 4How I Met Your Mother episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.