A first-half goal blitz laid the foundations for Boston to stun in-form Shrewsbury with a 6-0 win at York Street.
The Pilgrims spectacularly halted their run of six conseuctive league defeats to inflict on Shrewsbury only their second loss in 12 games.
On-loan striker Richard Logan scored the opener from Ben Chapman`s cross after 13 minutes, Jason Van Blerk then diverted the ball into his own net and Logan was on target again with a glancing header from a Simon Weatherstone cross on the half-hour mark.
Logan could have had a first-half hat-trick but goalkeeper Ian Dunbavin saved his penalty after Stuart Douglas had been fouled by Matt Redmile.
Douglas added the fourth goal with a tidy header from a corner just before the break, Neil Redfearn scored Boston`s fifth and James Gould rounded off the scoring in the final minute.