Home Hidden Camera Where Is The Best Place To Get A Hidden Camera/voice Recorder For Catching A Thief On Camera For Home Use?

Where is the best place to get a hidden camera/voice recorder for catching a thief on camera for home use? - home hidden camera

My friend has a nanny, which she believes are stolen in May. He wants a hidden camera that provides a major and a voice recorder, that the data for at least 8 consecutive hours, if possible can get. Any tips?