Story about a little bird who asks animals, planes and boats if they are his mother until he finds her.

Xen and Xander Homes think living in London will be boring. But one afternoon they're handed a cryptic note that leads them to a hidden room -- and a secret society. When they discover that they're related to Sherlock Homes and inherit his unsolved casebook, life becomes so much more exciting. The siblings set out to solve the cases their famous ancestor's couldn't, staring with mysteryof a prized painting that vanished more than a hundred years ago....

Henry, feeling lonely on a street without any other children, finds companionship and love in a big dog named Mudge.