Answer:

espials

Answer	Crossword Clue
ESPIALS	Undercover operations
ESPIALS	Sightings
ESPIALS	Observations

ESPIALS	Secret sightings
ESPIALS	Furtive observations
ESPIALS	Spottings or detections

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.