Encouraged by new attention in the cold-case investigation of a serial killer who terrorized San Francisco’s gay community in the 1970s, police will announce Thursday that it is doubling the reward to $200,000 for information leading to the capture and conviction of the notorious “Doodler.” The announcement will come 48 years to the day after the first victim was found lying at the water’s edge off Ocean Beach on Jan. 27, 1974. The San Francisco Police Department is also expected to confirm it is adding a probable sixth victim to the total of gay men whose bodies were found along...