NMAC BTWN 2 SMT APCH TO LAND AT TWR CTL ARPT.

Narrative

I WAS CLRED TO LAND IN COMPANY'S C208B (CARAVAN). I WAS TOLD BY THE TWR ONCE AGAIN THAT I WAS #1 CLRED TO LAND RWY 9 AND TO START MY L BASE. MEANWHILE A BARON RPTS OVER LEVITOWN WATER TANK (APPROX 7 MI SW OF MY POS) INBOUND FOR LNDG AND HE IS INSTRUCTED TO FOLLOW ME AND THAT HE WILL BE #2 FOR LNDG. I TURNED BASE AND RIGHT BEFORE I TURNED FINAL I SCANNED TO THE R TO LOOK FOR THE ACFT WHICH I ASSUMED WAS STILL PRETTY FAR OUT SINCE I DID NOT SEE HIM. THE CARAVAN HAS A PRETTY LARGE BLIND SPOT AT THE 1-2 O'CLOCK LOW POS AND THAT IS EXACTLY WHERE HE WAS. AS I TURNED FINAL ON A L DSNDING TURN HE APPEARED AT MY 2 O'CLOCK AND SINCE I WAS DSNDING HE APPEARED TO BE CLBING (PERSPECTIVE ONLY; HE WAS PROBABLY LEVEL OR DSNDING AT A LESSER RATE). I ESTIMATE THAT I MISSED HIM BY APPROX 25 FT. HE WAS FASTER THAN I WAS AND CUT ME OFF FROM R TO L AS I RPTED THE INCIDENT TO THE TWR AND ASKED HIS INTENTIONS. THE CTLR SAID HE WAS SUPPOSED TO BE FOLLOWING ME AND INSTRUCTED HIM TO MAKE A R 360 DEG TURN WHICH WOULD HAVE PUT HIM RIGHT ON ME AGAIN SINCE I WAS NOW AT HIS 4 O'CLOCK POS. HE REPLIED UNABLE (THANK GOD!) AND THEN I WAS INSTRUCTED TO TURN R TO JOIN A R DOWNWIND FOR RWY 9 AND TO FOLLOW ANOTHER TFC #2 CLRED TO LAND. VERY SCARY INCIDENT! IT WAS DEFINITELY NOT MY DAY!