6x13 The Trouble with Jenny (February 14, 1973)

6x12 Egg and Cress Sandwiches (February 07, 1973)

6x11 Home and Away (January 31, 1973)

6x10 It's a Woman's Privilege (January 24, 1973)

6x09 The Windsor Royal (January 17, 1973)

6x08 The Golden Boy (January 10, 1973)

Frank is hired to find a missing man.

6x07 A Family Affair (January 03, 1973)

6x06 Horse And Carriage (December 20, 1972)

A husband asks Marker to investigate his wife thinking she's having an affair, but is he having an affair aswell?

6x05 The Man Who Said Sorry (December 13, 1972)

6x04 Mrs Podmore's Cat (January 01, 0001)

Frank is hired to look after a pet cat named Bertie.

6x03 Many a Slip (November 29, 1972)

6x02 Girl in Blue (November 15, 1972)

6x01 The Bankrupt (November 08, 1972)