Act of Betrayal or Treason
This page is the CodyCross answer for the clue below from California, Group 1154, Puzzle 4 (Sentinel Dome).
Question is: Act of Betrayal or Treason
and the answer is: TREACHERY
Word Meaning:
TREACHERY — Deliberate, often calculated, disregard for trust or faith.
Definitions from Wiktionary.