McBreen was prepared to return to Australia before being offered a trial with Falkirk of the Scottish First Division. He also played for Conference South club St Albans City in pre-season before Falkirk received international clearance to play him in September 2004. McBreen made his debut as a 73rd-minute substitute for Andy Thomson in a 3–0 home win over Gretna in the Scottish Challenge Cup on 14 September. This marked the start of a run of nine goals from seven matches, He finished 2004–05 with 13 goals from 26 matches His 13 league goals saw him ranked as the division's fourth highest scorer.