Saw this movie early 1960's. Black and white film. Young niece in wheelchair arrives at uncles mansion. It's a suspense ,murder mystery. I think the uncle ends up dead at the bottom of apool or pond. At the end the niece sitting in her wheelchair on edge of a cliff overlooking the ocean. Tells her aunt who she really is and she knows her and the chaffuear murdered the uncle . She stands up walks away from the aunt. The aunt distraught sits down in the wheelchair. In the mansion the chaffuaer upon hearing from the police that he had been caught looks out the window . Thinking that the niece is sitting in the wheelchair. He runs out and kicks the wheelchair off the edge of cliff not knowing it was the aunt in it. Been trying to find title for quite sometime. Thanks for any help.

Taste of Fear (1961) (http://www.imdb.com/title/tt0055505/)