"Bartlett Mystery" by Louis Tracy is a gripping tale set in New York City, where Winifred Bartlett, a beautiful and impoverished orphan, finds herself entangled in a web of danger and intrigue. As she faces a series of mysterious disasters, the charming Rex Carshaw and two determined police detectives step in to uncover the sinister forces threatening her life and liberty. The story reveals how Winifred's resemblance to her long-deceased mother draws the attention of a diverse cast of antagonists, including a U.S. senator and a ruthless gangster.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.

The Missing Formula is a thrilling young-adult mystery about orphan Anne Fairaday, who must uncover her father’s missing scientific formula before it falls into the wrong hands. With the help of her brave friend Madge Sterling, she embarks on a race against time filled with danger and deception.