His Highness Abdullah(1990)

Original title: ഹിസ് ഹൈനസ്സ് അബ്ദുള്ള

The story follows Abdullah (Mohanlal) who is hired by the members of a wealthy royal family to assassinate the family head Maharaja Udayavarma (Nedumudi Venu). Abdullah comes into the royal palace under the disguise Ananthan Namboothiri, a classical singer, and tries to use this mask to softly kill the Maharaja.