The stories aren't so much detective stories as stories of supernatural occurrences: ghosts, possession, psychic powers, the afterlife and the like. Not surprisingly, the best stories were more grounded in earthly circumstances, plots of theft or murder. That really is Christie's forte and when she strays into the supernatural it feels fake and in some cases ridiculous. But kudos to her for stretching her writing legs.
The best of this collection are The Red Signal, The Fourth Man, The Wireless, The Mystery of the Blue Jar and the best of the best Witness for the Prosecution. These stories have a clever twist that I couldn't see coming.
One theme that popped up a lot in these stories was that women, foreign women particularly (especially non-white women) are dangerous, devious and not to be trusted. I thought this was odd considering she was a woman. I wonder if she was bending to the public by writing this way.
The better stories outweigh the so-so ones in The Hound of Death and for that I recommend the collection.
About the audio: Actor Sir Christopher Lee (Dracula, The Lord of the Rings) did a fabulous job narrating The Hound of Death. One of the best audio presentations I've ever heard! He takes on the persona of every character in the stories. His accents are terrific. It was so entertaining. I hope he narrates more books.