There's No Business With Show Business - S2.E36

Their latest traveling salesman guest sneaks out of the hotel without paying his bill. Kate and Uncle Joe find a guidebook for traveling salesmen listing certain hotels that can be scammed. Joe's name is mentioned as an easy mark. Harry Harmon, the owner of a traveling circus, has a similar guidebook. He plans to con Joe into letting the flat-broke circus troupe take up lodging at Shady Rest. Harry claims he'll pay for 5 rooms and then he sneaks in the rest of his performers. Kate becomes suspicious when she thinks she sees people that haven't registered, more food is being consumed than should be, and she hasn't seen any money yet. Kate finds Harry's guidebook and, realizing that she has been taken, kicks everyone out.

Note: This episode is the last one to be filmed in black-and-white and the last one where Jeannine Riley plays Billie Jo and Pat Woodell plays Bobbie Jo.