Inverness CT booked their place in the fifth round of the William Hill Scottish Cup in style by beating St Mirren 4-0 on Tuesday night.
The sides drew 1-1 in Paisley on Saturday but John Hughes' team ran out comfortable winners in the replay to set up a last-16 meeting with Partick Thistle at Firhill in February.
Garry Warren and Greg Tansey (penalty) had Caley Thistle in control at the break, Danny Williams added the third goal and Graeme Shinnie netted a late fourth.