Spies

20 clues
Spots
Moles
Spooks
Agents
Notices
Discerns
Operatives
Some plants
Moles, e.g.
Some agents
Hari et al.
Infiltrators
CIA employees
Double agents
Secretive ones
007 and others
Bond and others
Catches sight of
Secret collectors
Theme of this puzzle
Similar answers:
Aabatteries
Aaronburrconspiracy
Aaronspelling
Aasponsor
Abandononespost
Abatteries
Abbacies
Abcsports
Abies
Abiesirish
Abiesirishroast
Abiesirishrose
Abilities
Abovesuspicion
Abowlofcherries
Absurdities
Academies
Accessories
Accesspoint
Accountspayable