Examples of other secrets from To Kill a Mockingbird:
SCOUT & JEM. Scout and Jem share several secrets during the novel, particularly the secret hiding place in the knothole where their surprise gifts are exchanged.
ATTICUS. Atticus keeps it a secret that Judge Taylor has asked him to represent Tom Robinson--until he discloses the fact to his brother, Jack (and is overheard by the snooping Scout). Atticus also keeps his marksmanship skills hidden from his children until he is forced to kill the mad dog.
BOO RADLEY. The mysterious Boo keeps many secrets to himself, but few are disclosed in the novel.
THE EWELLS. Maycomb's most hated family holds many secrets, but the reader learns only a few. For instance, does Bob rape Mayella? How often does he beat her?
MISS MAUDIE. The Finch's neighbor guards her special recipe for Lane Cake. She also keeps many of her conversations with the children to herself instead of sharing them with Atticus (or the rest of the neighborhood).
DOLPHUS RAYMOND. The town's leading oddball shares a big secret with the children: It's only Coca-Cola that he sips through the straw from the bottle hidden in the paper bag.
BRAXTON BRAGG UNDERWOOD. The editor of the paper secretly guards Atticus--with a shotgun in his lap--on the night of the near lynching of Tom Robinson.
There are several instances of secrets in the story, and most revolve around Boo Radley. For example, the truth about why Arthur Boo Radley stays inside is never really revealed. Boo secretly hides presents in the tree for the children, and they in turn keep them a secret from Atticus. Jem decides to keep a secret from his father when he hides the fact that he was the one that Mr. Radley shot at and he left his pants on the porch. This secret allows him to keep his father’s respect. The biggest secret in the story is Heck Tate and Atticus’s decision to tell everyone that Bob Ewell fell on his knife. Tate decides that exposing Boo to the public eye would do more harm than good, and they decide to keep the fact that he killed Bob Ewell to save Scout a secret.