The Mysterious Intruder

1 Lassie at the Grand Canyon 2 The Bloodhound 3 The Mysterious Intruder 4 The Badger Game 5 The Outlaw 6 The Winner 7 Heat Wave 8 The Deer 9 Lassie Adopts the Fire Chief 10 The Pied Piper 11 Joey 12 Lassie's Wild Baby 13 The Dognappers 14 The Dove 15 Yochim's Christmas 16 The Parrot 17 Lassie's Protege 18 The Black Sheep 19 The Partnership 20 The Hike 21 Bird of Prey 22 Casey 23 The Odyssey I 24 The Odyssey II 25 The Odyssey III 26 Double Trouble 27 Eager Beaver 28 Lassie and the Eagle 29 The Vindication of Relentless 30 The Unwanted 31 The Musher 32 Lassie's Good Deed 33 Sanctuary 34 Lassie and the Calf 35 Elephant Sitters 36 Lassie and the Tiger