Starbuck Family Adventure Series by Kathryn Lasky

When their father accepts a new job in England, July, Liberty, and their family find themselves exploring the foggy streets of London. The twins try to discover the source of the voice only they can hear--a voice that needs their help. Using telepathy and their individual talents, the twins uncover a long-lost manuscript of Sir Arthur Conan Doyle’s, along with the ghost of Sherlock Holmes’s forgotten twin brother.

When the Starbuck family moves to a houseboat in the Florida Keys, the children love their new home and soon discover they share a wonderful telepathic link with the dolphins. When they find that someone is poisoning the water with toxic waste and that the creatures of the Keys are dying, the twins must stop the culprits before it’s too late.

[shared copy] The Starbuck family is anything but ordinary. There are two sets of Starbuck twins: preteens Liberty and July, and their little sisters Charly and Molly. But even more extraordinary is the fact that all four children have the ability to teleflash—they can talk to each other without saying a word! It's a power that comes in handy whenever these adventurous kids are on the trail of a villian... more[shared copy] The Starbuck family is anything but ordinary. There are two sets of Starbuck twins: preteens Liberty and July, and their little sisters Charly and Molly. But even more extraordinary is the fact that all four children have the ability to teleflash—they can talk to each other without saying a word! It's a power that comes in handy whenever these adventurous kids are on the trail of a villian. Before the Starbuck family embarks on a trip to New Mexico, a whisper comes through the wind to Liberty. It leads her and her twin, July, to an ancient hillside dwelling that was the site of a tragedy. In their quest to rectify the wrongs of the past, the twins encounter a group of thieves who will stop at nothing to steal the artifacts in the ancient home. less