Secret agenda

Watchful eye

Mysterious atmosphere

Silent observer

Mysterious gaze

Dark tone

Intriguing character

Enigmatic gaze

Intriguing look

Eye of beholder

Eye socket

Golden eye

Unseen observer

Eye in darkness

Unseen worlds

Window to realm

Visionary gaze

Hidden message

Peek into soul

Unblinking vigilance

Ominous eye

Observer in dark

Veiled vision

Mysterious glint

Eye of wonder

Luminous observation