Marty and Grace Series by Roland Smith

After their parents are lost in an accident, thirteen-year old twins Grace and Marty are whisked away to live with their Uncle Wolfe-an uncle that they didn't even know they had! The intimidating Uncle Wolfe is an anthropologist who has dedicated his life to finding cryptids, mysterious creatures believed to be long extinct.

Marty and Grace are living with their Uncle Wolfe, a scientist fascinated by cryptids - creatures that appear in myths but haven't been proven to exist. The twins join Wolfe on a journey, on a huge (and possibly haunted) ship, in search of a rare giant squid. But someone on board is determined to sabotage the mission!

Monsters of legend come to life! The third thrilling title in Roland Smith's popular Cryptid Hunters series.A mysterious creature, a missing girl, and danger at every turn . . .CHUPACABRA, the riveting sequel to TENTACLES and CRYPTID HUNTERS, reunites Marty and his unusual uncle, cryptozoologist Travis Wolfe, as they search the world for Wolfe's daughter, Grace... moreMonsters of legend come to life! The third thrilling title in Roland Smith's popular Cryptid Hunters series.A mysterious creature, a missing girl, and danger at every turn . . .CHUPACABRA, the riveting sequel to TENTACLES and CRYPTID HUNTERS, reunites Marty and his unusual uncle, cryptozoologist Travis Wolfe, as they search the world for Wolfe's daughter, Grace. Grace has been kidnapped by her grandfather, the ruthless and dangerous Noah Blackwood, who has also stolen the two dinosaur hatchlings Wolfe was raising in secrecy. Now, with word that the mysterious creature known as Chupacabra has been sighted again, Wolfe is torn between his obsession with finding cryptids and his desperate need to rescue his daughter. With trouble at every turn and a dangerous journey ahead, will Marty and Wolfe come face-to-face with the mythic monster? Even more frightening, will they reach Grace before it's too late? less

Monsters of legend come to life! The final thrilling title in Roland Smith's popular series. Marty and his best friend, Luther, have managed to rescue Marty's cousin Grace from the clutches of the nefarious pseudo-naturalist Noah Blackwood, but their most dangerous mission lies ahead of them. Marty's parents have been missing in Brazil for months and their trail has all but run cold... moreMonsters of legend come to life! The final thrilling title in Roland Smith's popular series. Marty and his best friend, Luther, have managed to rescue Marty's cousin Grace from the clutches of the nefarious pseudo-naturalist Noah Blackwood, but their most dangerous mission lies ahead of them. Marty's parents have been missing in Brazil for months and their trail has all but run cold. With time running out, Marty and the Cryptos Island crew race off for Brazil -- where they discover that Noah Blackwood has twisted the natural order of things beyond their wildest, most terrifying dreams. less