SOLVED. Twin ghosts with same initials, ghost dog [s]

[Clare K. R.]

This is a children's/MG series. The main characters are twins, a boy and a girl, who have the same initials (their initials might make a word), and their dog. They are all ghosts. I believe they had drowned in a certain lake and they couldn't get more than a certain distance from that lake or they would start to fade (or something like that).

They were invisible, but could become briefly visible by concentrating. They could also pick up objects by concentrating hard enough. In one book, the girl returns some books to the library by just setting them down on the counter when no one is looking, and the librarian is confused as to where they came from. In another book (I think) they meet a living boy with a computer and they are able to type to communicate with them. There is also a scene where they're running with their dog and one of them falls off a boulder. The other asks "are you all right?" and the one who fell responds "I think I'm dead" which makes them both laugh.

Thanks for any help you can offer!

[Snail in Danger (Sid)]

The Mystery at Kickingbird Lake
^ Book 1 of the Ghost Twins series. Their names are Robert and Rebeka.

[Clare K. R.]

Thanks, Nikki! Pretty straightforward, huh?