"The Investigation" was a somewhat flawed experiment on Lem's part. However, the much later "The Chain of Chance" (I had to look up the English title - the ori

"The Investigation" was a somewhat flawed experiment on Lem's part. However, the much later "The Chain of Chance" (I had to look up the English title - the original is named "Katar", or "Rhinitis") is a captivating read. Lem himself called it a better version of "The Investigation". It's also of the "detective story" type that he'd take up every now and then, but more dynamic and not as spooky.