Chacha raised an eyebrow. "A haunted mansion, you say? That's a new one, Sabu!"

"Thank you for coming, Chacha. I've been experiencing strange occurrences here. Doors slam shut on their own, and I've seen a ghostly figure roaming the halls."

Chacha patted Sabu on the back. "Don't worry, Sabu. We'll face whatever is going on here."

The next day, Chacha and Sabu arrived at the mansion, which was a grand structure with towering spires and large windows. Mr. Kumar greeted them nervously.

Chacha smiled, puffing on his cigar. "It's all in a day's work, Sabu. Now, let's head back to the office. We have more cases to solve."

Chacha's eyes lit up. "Ah-ha! This is our first clue, Sabu."