Parry snapped up 3 for 31 in 24.2 overs first time around, taking the last two Surrey first innings wickets in successive balls to leave them an agonising two runs short of avoiding the follow-on. Gareth Batty, who had batted well to reach 33 in a fighting ninth wicket stand of 57 with Tom Curran (33 not out), drove straight to mid off before last man Mark Footitt was lbw pushing defensively at his first ball.
Kerrigan, who did much to initiate a Surrey slide from an apparently comfortable 211 for 2, took 2 for 15 in a marathon 21-over spell which began twenty minutes before lunch – 11 of which were maidens. Overall, Kerrigan’s first innings figures were 29-12-35-2.
He and Parry rendered the Surrey middle order almost strokeless for most of the afternoon, after Parry had seen Kumar Sangakkara chip his first ball of the day tamely to short mid wicket to go for 46. The great Sri Lankan had just been dropped, on 45, off Kerrigan.
Indeed, it was something of a mystery why Liam Livingstone, the stand-in Lancashire captain, bowled his own off breaks for a spell in mid-morning but delayed bringing his two senior spinners back into the attack until Kerrigan was introduced for the 67th over of Surrey’s first innings.
Both Sangakkara and Burns, who resumed on 48 in Surrey’s overnight 112 for 2, looked in little trouble against Lancashire’s seamers, although it was Kyle Jarvis who eventually broke a third wicket stand of 99 when Burns, having scored a 215-ball 91, with 14 fours, pushed loosely at the Zimbabwean paceman and edged behind.
Then, five runs later, came Parry’s immediate success against Sangakkara and, with the two left-arm spinners now in tandem, Surrey’s innings fell away alarmingly as the pressure built against two bowlers rattling through their overs but never losing their accuracy.
Kerrigan bowled Ben Foakes for 9, firing a leg-stump yorker through his defences, and an equally strokeless Dominic Sibley was run out for 10 after being sent back by Zafar Ansari as he pushed Kerrigan into the offside.
Left-hander Ansari was twice all but bowled by Kerrigan before having his leg stump knocked back on 3 by another that turned between bat and pad, and Sam Curran then greeted the return of Ryan McLaren, armed with the much-delayed second new ball, by immediately clipping to mid wicket on 14 to leave Surrey really struggling at 262 for 8.
Sam’s brother Tom, however, stood firm in company with Surrey captain Batty to rally the home side for a while – before Parry had the last laugh with the scalps of Batty and Footitt to put Lancashire in complete control.
Slow left-armers Parry and Kerrigan took five first innings wickets between them as Surrey struggled in reply to Lancashire’s 470, before Kerrigan enjoyed another early second innings success.
Rory Burns, having added 20 to his first innings 91, had just cut Kerrigan for four when he was caught behind pushing forward defensively. Mark Stoneman, though, is still there on 22 and Scott Borthwick also made it through to stumps at 6.30pm on 4 not out.
Lancashire captain Liam Livingstone said: "It was a really interesting day's cricket on what is still a good pitch, and the way our two main spinners bowled after lunch was one of the best bowling performances I have seen for a very long time. Hopefully we have set up the chance to force a win tomorrow, and we have given ourselves that chance with the way we bowled today."
Lancashire had to settle for a draw in their opening Specsavers County Championship Division One match against Essex, despite dominating much of last week’s contest at Chelmsford, but this time they will expect to finish the job on a pitch beginning to take turn. Surrey remain 96 runs behind.