Warning: This post contains mentions of murder, shootings, and death. Please proceed with caution.
Hello, fellow enthusiasts of all things spooky! March is officially in full swing, so it's time for this month's edition of ~real-life unsolved mysteries~! If you're new here, every month I ask BuzzFeed readers just like you to tell me about their creepiest, most unbelievable real-life "unsolved mysteries." An "unsolved mystery" is basically anything you can't come up with a logical explanation for. Like, for example, a paranormal experience, a glitch in the matrix, or even a run-in with your doppelgänger. If it's spooky and you're not sure how the heck it happened, you're on the right track!

I read through hundreds of puzzling and — frankly — unsettling submissions each month and pick the very best of the best to highlight. So, allow me to present you with these 26 stories that were so bone-chilling and fascinating, I just had to share them with you:
1. "My sister called me because she was concerned her son had an invisible friend he always played with. He had two sisters but preferred to go outside to play with his friend instead. I brought pictures of various family members over to her house. I asked him to tell me if he saw his friend in any of the photos, wondering if it was a deceased family member of ours keeping him company. I was halfway through the stack, and he was losing interest. Then all of a sudden, he lit up and said, 'That’s my friend!' It was a picture of our brother when he was the same age as my nephew. My nephew was named after our brother, who had been killed in a car accident when he was 21 years old, over 10 years before. My sister started to cry, and I told him he was done and could go play with his friend. He still remembers his friend as an adult."
—Theresa, Woodbury, USA
2. "Back in the 1990s, I gave my mother a very nice CD player as a gift. I had pre-loaded it with operatic and classical music for her. When she died years later, I brought the CD player home with me. For the next two years, at odd times, the CD player would turn on, playing Wagner's "March of the Valkyries" every time. I was telling my five grown children about this one day, out on the deck. I was met with much skepticism...until the CD player suddenly turned on and started playing the March LOUDLY. No one was in the house. The kids just stared. It did not matter which CD I had put in it to play, it always played the March."
—Anonymous