The Lake Van Monster appears in "The Secret Saturdays" episode "The Unblinking Eye.

Entity and relation annotations:
id: 0
type: entity
value: text: "The Secret Saturdays"
labels: <Work_of_art>
id: 1
type: entity
value: text: "The Unblinking Eye
labels: <Work_of_art>
id: 2
type: entity
value: text: The Lake Van Monster
labels: <Event>