Two couples face the possibility that their infant sons, both born on the same day, were inadvertently switched at the hospital, and a chain of revelations and decisions threatens both families.
| Actor | Role |
|---|---|
 Donna MillsKathy Saunders | Kathy Saunders |
 Ken HowardMichael Saunders | Michael Saunders |
 Ann DusenberryHolly Barnes | Holly Barnes |
| MMichael C. GwynneDr. Langtry | Dr. Langtry |
 George CoeDr. Stadler | Dr. Stadler |
 Dorothy MaloneDr. Sullivan | Dr. Sullivan |
 John JamesTed Barnes | Ted Barnes |
 Angie BollingMarcia | Marcia |