Answer:

regicide

Answer	Crossword Clue
REGICIDE	Hamlet's plan
REGICIDE	King-killer.
REGICIDE	Macbeth's crime

REGICIDE	Killing of a king
REGICIDE	"Macbeth" theme
REGICIDE	Fate of Louis XVI
REGICIDE	The killing of a king

Crossword

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