Relevant here, the court must instruct the jury that accomplice testimony must be corroborated and should be viewed with distrust. (See People v. Williams (1997) 16 Cal.4th 635, 682.) A defendant may not be convicted based on the testimony of an accomplice unless the testimony is corroborated by independent evidence that tends to connect the defendant to the crime. ( 1111.) An accomplice is defined as "one who is liable to prosecution for the identical offense charged against the defendant on trial in the cause in which the testimony of the accomplice is given." (Ibid.) "'A witness is liable to

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prosecution within the meaning of section 1111 if he or she is a principal in the crime.' [Citation.] A principal includes those who 'directly commit the act constituting the offense' and those who 'aid and abet in its commission.' ( 31.)" (People v. Carrasco (2014) 59 Cal.4th 924, 968.)