The park's septic tank explodes and Mal and Jen are forced to turn to the only sewage expert around: Mayor Herman Bloch, the eccentric father of Tina's new boyfriend. Meanwhile, Freddie struggles to find his place at school, and Conan looks to take his and Tina's relationship to a whole new level... and it's not one Tina was expecting.

• Mick Ford

• Leslie Jordan
• Paula Wilcox
• Lesley Sharp