Sweet Little Lies

DCI Ted Darling hates being lied to.
When he finds out by chance that an officer lied to him in a previous case he demands an explanation. He's not prepared for being told he must be a lousy boss if he wouldn't do the same to protect one of his own.
Then a person close to him is falsely accused of a serious crime.
Ted has a moral mountain to climb to answer the burning question: are there any circumstances where he would condone a lie to protect someone else?