Alibi

Create a illusionary copy of yourself. This copy will act as you want it to until it takes damage or is dispelled. The copy of yourself shares your memories and personality from the time of casting and can't form new memories. This allows the copy to mimic you perfectly including actions you may actually make. If a creature must make a insight check to check to see if it is you or ,if in combat, a wisdom saving throw. If the mimic is discovered then the spell disperses.  If attacked its instantly discovered.