[News anchor] Officials in the

Los Angeles suburb of Arcadia

have taken custody of a 13 year old girl,

who they say, was kept in such isolation
by her parents,

that she never even learned to talk.

The girl still wore diapers,

and was uttering infantile noises,

when a social worker discovered the case

two weeks ago.

The authorities are hoping

she still may have a normal
learning capacity.

Among the first to see the child

was Temple City detective,

Sergeant Frank Linley.

[Eerie music]

[Sgt. Linley] I already knew that

the child was 13 1/2 years old,

and I took one look at her,

and she wasn't much bigger

than my daughter, Beverly,

who had just turned seven
about 3 months earlier.

And, I really had a hard time

conceiving of the idea that the child

was the age that she was.

The child, uh, obviously,

had been severely mistreated.

She was still in diapers, couldn't walk,

she had no verbal skills at all,
at that point.

[Eerie music]

The last time I was on this street

was probably 30 years ago.

Yep, there it is.

Hasn't changed much.

The back yard looks the same.

It's all weeds and dead grass.

Looks the same as it did in 1970.

[Narrator] The house belonged
to Clark Wiley.

A loner, Clark had turned his

back on the world,

after his mother had been killed

in a hit and run accident.

After the accident,

things in the Wiley house

would never be the same again.

[Sgt. Linley] The house was
completely dark.

All the blinds were drawn.

There were no toys.

No clothes.

Nothing that would ever
indicate to you

that a child of any age
lived there.

[Eerie music. Passing cars whoosh.]

The child