What Lies Beneath is the twenty-sixth episode of Slugterra. It aired in Canada on July 1, 2012.
When Eli and the Shane Gang find themselves trapped in the Deep Caverns underneath Slugterra they discover a whole new type of danger threatening to escape. Allowing it past the barrier would mean unprecedented peril — not only for Slugterra, but our world above too!
- Eli Shane
- Kord Zane
- Dr. Blakk
- John Bull
- El Diablos Nacho
- Shadow Clan
- Featured slugs: Boon Doc, Darkfurnus, Guardian Slugs
- This is the first time the Shane Gang resorts to using ghouls.
- In this episode, Doc leaves the team to become a Guardian Slug.