In a devastating moment, Frank was involved in a car crash shortly after and was killed.
Actor Menzies remained in the drama as he also played Captain Jack Randall but he later died in the same series at the
Battle of Culloden at the hands of Jamie Fraser (Sam Heughan).
Menzies has made brief returns to the series during flashback moments but hasn't made a comeback full-time.
Outlander: Frank Randall is portrayed by actor Tobias Menzies. (Image: GETTY)
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Outlander: Frank Randall died in a car accident shortly after a row with wife Claire. (Image: STARZ)
The Crown star has never given a reason as to why he left the show but it could just be because it was written this way.