Great things were expected when European champion and self-proclaimed 'Special One' Jose Mourinho was appointed manager following Claudio Ranieri's departure.
Things began well with a 1-0 win over fellow title-chasers Manchester United at Stamford Bridge, and by mid-October we were keeping pace with champions Arsenal, unbeaten.
A Nicolas Anelka penalty at Manchester City saw us lose for the first and only time but we bounced back with six straight wins, conceding just twice in the process to move us two points clear at the top in late November. New signing Arjen Robben, injured for the opening games, was now making his pacy presence felt.
We travelled to Highbury and came from behind twice to earn a point, new captain John Terry and Eidur Gudjohnsen grabbing our goals and a New Year's Day win at Anfield moved us five points clear.
Victory at White Hart Lane on a day when Arsenal slipped at Bolton and a narrow win at Blackburn, in which an early Robben goal and a Petr Cech penalty save brought us all three points, gave hope that this could be Chelsea's year.
City again frustrated us with a goalless draw at the Bridge but by now the gap was nine points to our nearest challengers.
Norwich scared the new Carling Cup winners when they equalised at Carrow Road, but late strikes from Mateja Kezman and Ricardo Carvalho calmed the nerves with Man United only drawing at Crystal Palace, and having seen Barcelona off in the Champions League we then beat strugglers West Brom, Crystal Palace and Southampton to move us 13 points clear in early April. Nothing was going to stop Mourinho winning Chelsea's first title in 50 years.
Draws with Birmingham and Arsenal suggested a stutter, but we travelled to Bolton on April 30 knowing a win would deliver the championship. Two Frank Lampard goals, taking him into folklore and to the 20-goal mark, wrapped it up.
Unsung hero Claude Makelele netted the only goal after missing a penalty as we celebrated at the Bridge, and Tiago struck from 35 yards to beat United at Old Trafford.
Records had been broken. Our 95 points and 15 goals conceded remain unbeaten to this day. The challenge now would be to repeat the feat in 2006.