Dr. Guthrie (John Lasell) finds out that both Burke (Mitchell Ryan) and Sam (David Ford) are suspicious of Laura (Diana Millay). More determined than ever to hold a séance to determine the cause of Elizabeth's illness, Guthrie tries and fails to involve Laura in this undertaking. This episode of Dark Shadows first aired on Febuary 15, 1967. ~ Hal Erickson, Rovi