Young schoolteacher Charles Edward Chipping (Robert Donat) imposes strict discipline on his young charges at a Victorian-era English public school, becoming a fearsome presence on the campus grounds. But the love of spirited young suffragette Katherine Ellis (Greer Garson) brings the Latin instructor out of his shell and makes him a beloved campus institution into the 20th century and through the shattering violence of World War I. The film is based on the best-selling novel by James Hilton.
Answer:
the thief was caught by the police
So it backs up your answer with your claim if you cite and have evidence
You'll have to be somewhat more specific with regards to what form of transformation you refer to. Shaper shifter, red riding hood and the wolf, multiple personality disorders, serial killer etc... The one common thread in this context is that appearances are always deceiving so it is always wise to be on your guard in any given situation because absolute safety is an illusion.