Joe Thomas struggles with the definition of a mammal, Iain Stirling devises an explosive chemistry experiment and Sian Gibson sends an NSFW text to Greg.

The competitive nature of Taskmaster bubbles alarmingly to the surface as a simple team task involving a hammock exposes tensions between two of the five comics vying to win.

Beach balls, water and sand contribute to a seaside feel, a jolly tone that is interrupted when Greg Davies deals with the questionable actions of one contestant.

Five new contestants - Iain Stirling, Joe Thomas, Lou Sanders, Paul Sinha and Sian Gibson - complete a series of tasks under the watchful eye of Greg Davies and Alex Horne.

Alex Horne takes scrupulous notes as Paul Sinha squats in a telephone box, and Iain Stirling stakes his claim for the Scottish national football team.

Lou Sanders chews on some stationery, Sian Gibson is crushed by a caravan, Paul Sinha wrecks a camera, Joe Thomas gets cross and Iain Stirling waves a stick about.

The race continues for Greg Davies's golden head trophy. Today, an interesting selection of facial hair and a fascinating collection of continuous noises.

Paul Sinha has some struggles with a basketball, Joe Thomas has a disastrous birthday and will Sian Gibson rescue Little Alex Horne from the sharp beak of an aquatic bird?

Joe Thomas grapples grumpily with some awkward hand-wear, Sian Gibson seems to find proof that she may be psychic and Iain Stirling shows some tasty shortbread who's boss.

Paul Sinha, Lou Sanders and Iain Stirling become one while Greg Davies watches on, ready to issue his judgements. Sian Gibson seeks to redefine the definition of bounce.