Video: Season 4
Find out from Gwen the importance of weighing evidence.
Explore More Video: Web Exclusives
- Buildings Gwen gives tips on dating a house.
- Houdini Interview Watch more of Gwen's interview with magician Lance Burton.
- Genealogical Research Tips from Tukufu about how to conduct genealogical research.
- Testing Objects and Finding Experts Wes on how important it is to find the right experts.
- Paper Trail Tukufu talks about how to follow a paper trail.
- Devil Dog Dawson Watch the full clip of the silent film "Devil Dog Dawson".