Underground Ernie Season 1, Episode 21: Elementary, My Dear Bakerloo!

Pop Decoy

Popstar Sam 7 is playing at the theatre and it's up to Jubilee to get him there.

Sir Clunkalot

Mr Rails Never Fails

Ernie dresses up in a suit of armour and gets stuck, before saving a maiden in distress.

Brooklyn and Rocky Two Shoes

Pulling Together

Ernie has a bad cold so he leaves Millie in charge of Mr Rails's surprise party plans

Elementary, My Dear Bakerloo

Brooklyn and Rocky Two-Shoes

The trains are excited to see their old friend Brooklyn, and US athlete Rocky Two Shoes.

Finders Keepers

The Magician's Assistant

Pippa's cat Patch disappears during a thunderstorm, and there are other strange goings-on.

Cover Story

Millie's Day Dream

A horticulturist brings a rare plant to the Underground that turns hands purple.

Mr Movie Jones

Summer Breeze

Light at the End of the Tunnel

The Wreck of Sea Shell Bay

Catnapped

Monster Mystery

Bon Appetite

The Magic Lamp

How Great The Art

The Mayor's Visit

Techno Trouble

Snow Go

The trains are excited about the arrival of champion ice skaters Sasha and Natasha.