Espial

9 clues
Sighting
Discovery
Detection
Observation
First glance
End of a quest
Act of noticing
The act of spying
Act of keeping watch
Similar answers:
Abandononespost
Abbatial
Accessorial
Actuarial
Actuarialtables
Addserialcables
Adrakesprogress
Adverbial
Adversarial
Aerial
Aerialassault
Aerialcombat
Aerialist
Aerialists
Aerialladder
Aerially
Aerialmaps
Aerialmine
Aerialmines
Aerialphoto