Diamonds Aren't Forever - The Wallace-Adhikary Spy-Thrillers, #3

Betrayed and left to rot in a Colombian prison, disgraced MI6 agent Rupert Wallace refuses to break under ruthless torture by drug cartels. When a surprise attack frees him after years of captivity, Wallace discovers sinister forces manipulated events to discredit him. Obsessed with exposing this conspiracy and clearing his name, Wallace, along with his college chum, the famous Detective Chand Adhikary, and his parents, Dr.
Geet and Professor Bulbul, assembles a rogue team of operatives with their own dark pasts tied to the mysterious global cabal known only as Nexus. Aided by Glenda Firth, an MI6 linguist and tech expert undercover in Nexus, Wallace's crusade spans jungle minefields to arctic weapon bunkers in search of its elusive leader. But when they finally unmask the bloodthirsty Colonel pulling Nexus' strings, he escapes through an experimental wormhole, making contact with cosmic warlords harboring unearthly technologies.
Though Nexus suffers terminal blows, Wallace knows greater threats loom ahead now that Earth has drawn the attention of forces beyond mortal comprehension. But his resilient team vows to face the encroaching darkness together, ready to defend humanity no matter the cost in their unending battle for justice.