Train Stops Play is the seventeenth episode ever made in Season 4.
Stepney is puffing past a cricket field with some "empties" when a batter hits a "six" and their only ball lands in a truck. Stepney does not realise and, when his driver sees Caroline racing after them with the desperate cricketers inside, he mistakes them for joyriders and speeds up, to Caroline's annoyance. At last, Caroline arrives at Ffarquhar and the men get their ball back, but Stepney's driver notes Caroline looks exhausted and suggests that Caroline be rolled onto a flatbed. The cricketers ride back in a brakevan and Stepney and his crew watch the end of the game.
- After Percy arrives with his trucks, his roof is lifted.