Skip to content

Featured Popular Top Rated Upcoming Now Playing

Featured Popular Top Rated Airing Today On The Air

Action Adventure Animation Comedy Crime Documentary Drama Family Fantasy History Horror Music Mystery Romance Science Fiction TV Movie Thriller War

Search movies and TV series

Search movies and TV series

Featured Popular Top Rated Upcoming Now Playing

Featured Popular Top Rated Airing Today On The Air

Action Adventure Animation Comedy Crime Documentary Drama Family Fantasy History Horror Music Mystery Romance Science Fiction TV Movie Thriller War

Every movie and series, one place to find it.

Search movies and TV series

Loading content…

Discover where to watch movies and TV series online. Browse trending titles, streaming availability, ratings, trailers, cast and full episode guides — all in one place.

Movies

Featured
Popular
Top Rated
Upcoming
Now Playing

TV Series

Featured
Popular
Top Rated
Airing Today
On The Air

Discover

Trending
Free to Watch
Browse Genres
Search

© 2026 Watch Free Online Movies. All rights reserved.

This product uses the TMDB API but is not endorsed or certified by TMDB. Watch Free Online Movies does not host or stream any media — it links to where titles are legally available.

Loading title details…

What Would Happen If ...? poster

What Would Happen If ...?(2009)

2009 – 20101 season10 episodes44m

Documentary Reality

NRNot yet rated

User Score

No votes yet

Overview

Everything you wanted to know about everything. Just ask. Dr. Marty Jopson seeks answers to intriguing questions.

Seasons(1)

Season 12009 · 10 episodesNovember 4, 2009

Season list for What Would Happen If ...?

Top Billed Cast

M
Marty Jopson
Self - Host

Media

Where to Watch

No streaming options are listed for US right now. Availability changes often — check back soon.

Facts

Status: Ended

More Like This

Recommendations based on this series

78%User score 78 percent

Survivorman

2005 · Documentary · Reality

83%User score 83 percent

Paranormal Caught on Camera

2019 · Documentary · Reality

69%User score 69 percent

The Dead Files

2011 · Documentary · Reality

78%User score 78 percent

Welcome to Wrexham

2022 · Documentary · Reality

72%User score 72 percent

Beyond Belief: Fact or Fiction

1997 · Documentary · Mystery

62%User score 62 percent

The F Word

2005 · Documentary · Reality

59%User score 59 percent

Dark Net

2016 · Documentary · Reality

83%User score 83 percent

The Incredible Dr. Pol

2011 · Reality · Documentary

62%User score 62 percent

16 and Pregnant

2009 · Documentary · Reality

82%User score 82 percent

Mind Field

2017 · Documentary

78%User score 78 percent

Conversations with a Killer: The Jeffrey Dahmer Tapes

2022 · Documentary · Crime

75%User score 75 percent

Trust Me: The False Prophet

2026 · Documentary · Crime

81%User score 81 percent

Earth at Night in Colour

2020 · Documentary

76%User score 76 percent

Welcome to Earth

2021 · Documentary

79%User score 79 percent

Hard Knocks

2001 · Documentary · Reality

73%User score 73 percent

Starting 5

2024 · Documentary · Reality

66%User score 66 percent

The Idaho Murders: College Nightmare

2026 · Documentary · Crime

75%User score 75 percent

How Do They Do It?

2006 · Documentary

70%User score 70 percent

NOVA

1974 · Documentary

79%User score 79 percent

Nature

1982 · Documentary · Family

What Would Happen If ...? (2009) | Watch Free Online Movies

Type

Documentary

Original name

What Would Happen If ...?

First aired

November 4, 2009

Last aired

January 6, 2010

Network

National Geographic

Original language

English