Inspiral and Frankie Dettori bounced back to winning ways with a fine performance in the Prix Jacques le Marois at Deauville on Sunday.

The daughter of Frankel was the undoubted star juvenile filly of last season, winning each of her four starts, but missed the early part of the current campaign after reportedly being slow to come to hand.

And while she looked better than ever when trouncing her rivals on her belated return in the Coronation Stakes at Royal Ascot, John and Thady Gosden’s charge suffered a shock defeat when the 1/7 favourite to follow up in the Falmouth at Newmarket last month, meaning she headed for France with a point to prove.

Settled in midfield for much of the way while the Irish pair of Order Of Australia and State Of Rest forced the pace along with Japan’s Bathrat Leon, 7/4 chance Inspiral had to be niggled along to make inroads but did respond to Dettori’s urgings to grab the lead.

Jean-Claude Rouget’s previously unbeaten colt Erevann and the David Simcock-trained Light Infantry proved her most persistent challengers as the post loomed, but Inspiral stuck to her task to see off the former and claim her third Group One victory.

The disappointment of the race was undoubtedly Coroebus. Having been last early on, William Buick looked to be delivering the 2000 Guineas and St James’s Palace Stakes winner with a serious challenge a furlong down, but his effort petered out and he was ultimately well held in fifth place.

Dettori was winning his seventh Marois, and his third in a row following the back-to-back victories of Inspiral’s former stablemate Palace Pier.

He told Sky Sports Racing: “We were scratching our heads after Newmarket after an amazing performance in the Coronation.

“Today she was taking on Guineas winners and older horses and showed she’s a true champion. I’m pleased she’s bounced back to her very best.

“We went extremely fast throughout. She’s a filly that you need to know and when she wanted to go, she’s the kind of filly you don’t want to disappoint.

“I hit the front with plenty of time left, but John thinks she can get a little bit further, so I wasn’t afraid about getting to the line.

“She was champion two-year-old and apart from the blip at Newmarket she hasn’t done much wrong.”

John Gosden, winning the race for a fourth time following the successive triumphs of Palace Pier and previously Kingman in 2014, suggested Inspiral is unlikely to run again before Champions Day at Ascot in October.

“It wasn’t really that she was out of form last time – she’d had three weeks (since Ascot) and was in top form, but it was a small field and she didn’t get any cover. She overraced, did too much and didn’t have much left at the end, which is her nature,” said Gosden.

“There was a strong pace today and they went hard up front, Frankie said, so she switched off and relaxed and then she wanted to go and Frankie let her go. She probably hit the front a bit soon to say the least.

“She’s a three-year-old filly taking on older horses and she gets a little weight for that, which makes a difference, no doubt. But I think she’s shown her versatility and the key with her is to get her relax early. She’s very generous and wants to give and sometimes with that they’re a little over-enthusiastic.

“She’s done it well today and showed a lot of courage in the last part – she could easily have folded.

“We may well just freshen up for the QEII. You could go to a Matron or a Sun Chariot, but I would be inclined to freshen up for the QEII.”

Simcock was understandably thrilled with the performance of Light Infantry, who will now be prepared for a trip to Australia.

“I’m very proud of the horse and very pleased. He had a gallop to run at today, which was good, and he’s run his heart out and run a personal best,” said the trainer.

“I’m just happy that we’ve got here and run well and picked up a nice prize. Onwards and upwards.”

He added: “The likelihood is that he’ll go straight to the Golden Eagle in Sydney now in October. That will be his last run of the year and then he’ll come back.”

Charlie Appleby could offer no excuse for the underwhelming performance of Coroebus, but did hint that he could drop back in distance.

“It’s as simple as that – he didn’t turn up,” he said.

“We were going to hold up today anyway, that was always our plan, and the fractions were very strong on the front end.

“The way he travelled into the final two furlongs, I thought it was only a matter of William pressing the button, but unfortunately when he did press the button the response wasn’t there and he flattened out – and he didn’t particularly go through the line very strong, either.

“Most importantly he’s fine after the race. We’ll see where we are and let the dust settle over the next 48 hours and into next week.

“Something that’s on my mind is that he’s got a lot of natural pace, so I wouldn’t be nervous about coming back to seven furlongs.”