In a case that raises complex questions about where the expectation of privacy begins and ends, the Pennsylvania Supreme Court has agreed to hear arguments over whether the audio portion of a recording of a nanny’s alleged child abuse captured by a hidden surveillance camera in the home where she worked is admissible under the state’s wiretap statute.

In Commonwealth v. Mason, the Franklin County District Attorney’s Office is appealing a March ruling by a divided three-judge panel of the state Superior Court that allowed into evidence video of defendant Beth Ann Mason allegedly assaulting children in her care, but barred the audio portion of the recording.