John Gemmell's brace booked Albion Rovers a place in the Second Division play-off final as Queen's Park's chances of promotion ended.
With the semi-final poised at 1-1 on aggregate from the first leg, Rovers threatened through Ciaran Donnelly and Gemmell in the first half.
Gemmell converted from Robert Love's pass on 67 minutes.
Love struck the crossbar before Gemmell fired home from the edge of the box a minute from the end.
Albion Rovers will face Annan Athletic in the two-legged final.
Albion: Gaston, Reid, McGowan, Stevenson, Donnelly, Lumsden, Love (Ferry 87), Canning, Gemmell, Chaplain (Innes 90), Boyle (Hamilton 71). Subs Not Used: Flynn, Benton.
Booked: Chaplain, McGowan, Reid, Lumsden.
Goals: Gemmell 67, 89.
Queen's Park: Strain, McGinn, Meggatt, Little, Millen, Capuano (Quinn 77), McBride, Anderson, Daly (Sean Burns 77), Longworth, Smith (Watt 70). Subs Not Used: Hamilton, Gallagher.
Booked: McBride, Anderson, McGinn.
Ref: Stephen Finnie