‘The Lovebirds’: How’s the chemistry between Issa Rae and Kumail Nanjiani?

Critics review “The Lovebirds,” a murder-mystery romance on Netflix starring Issa Rae and Kumail Nanjiani; “Blood Machines,” about two people who try to find a machine that escaped from a spaceship; “Scoob,” a Warner Animation film starring the mystery-solving dog Scooby Doo.