[6] On his first appearance of 2018 Without Parole was partnered by Frankie Dettori in a minor event over a mile at Yarmouth Racecourse on 24 April and was made the 4/9 favourite in an eleven-runner field.

[7] A month later, with Dettori again in the saddle, the colt was stepped up in class to contest the Listed Heron Stakes at Sandown Park and was made the 6/4 favourite with the best of his seven rivals appearing to be Gabr and Stephensons Rocket.

After tracking the leaders he made progress in the straight, gained the advantage in the closing stages and held off the challenge of Gabr by three quarters of a length.

[8] The Group 1 St James's Palace Stakes at Royal Ascot on 19 June attracted a field of ten three-year-old colts and saw Without Parole head the betting on 9/4.

[11] On 1 August at Goodwood Racecourse Without Parole was matched against older horses for the first time in the Sussex Stakes and was made the 7/4 favourite to continue his unbeaten run.

Three weeks later the colt was reunited with Dettori and stepped up in trip for the International Stakes over 10+1⁄2 furlongs at York Racecourse and cam home sixth in a race won by Roaring Lion.

On his return to Europe he started the 7/1 fourth choice in the betting for the Lockinge Stakes at Newbury Racecourse on 18 May but after racing in mid-division he appeared to lose his action and dropped away rapidly and finished tailed off last of the fourteen runners.

He made his debut for his new trainer in the Breeders' Cup Mile at Santa Anita Park on 2 November when he was ridden by Irad Ortiz Jr. After being restrained towards the rear of the thirteen-runner field he produce a strong late run on the outside to finish third behind Uni and Got Stormy.

Later that summer he finished fourth to War of Will in the Maker's Mark Mile Stakes at Keeneland and sixth to Halladay in the Fourstardave Handicap at Saratoga Race Course.

John Gunther commented: "Without Parole gave me the most memorable and exciting day of my life with victory in the St James's Palace Stakes at Royal Ascot...