Detailed for Vin Makazian or Big Pussy.
: Meanwhile, Livia Soprano manipulates Junior Soprano by revealing that Tony has been meeting with other capos behind his back. This leads Junior to organize a hit on his own nephew. [S1E11] Nobody Knows Anything
: Evidence against Pussy includes his suspiciously quick release from jail and his persistent "back pain," which Dr. Jennifer Melfi suggests could be a psychosomatic symptom of stress—specifically, the burden of keeping a secret. Detailed for Vin Makazian or Big Pussy
: Detective Vin Makazian informs Tony Soprano that "Big Pussy" is an FBI informant. Tony is deeply conflicted because Pussy is one of his closest friends. : Evidence against Pussy includes his suspiciously quick
: As the title suggests, nothing is certain. By the end of the episode, the audience is left unsure if Pussy is truly a rat or if Tony is being manipulated by Makazian's biased intelligence.