A Flame in Hali is a science fantasy novel by American writers Marion Zimmer Bradley and Deborah J. Ross, part of the Darkover series.

The book explores issues involving weapons of mass destruction and mutual disarmament treaties, and continues Bradley's themes regarding the ethics of telepathy.

Years prior to the start of the book, the disgraced and forgotten larenzu, Rumail Deslucido, dies in a remote village.

Mentally overshadowed at the death of his deranged laranzu father, all Eduin can hear is a voice in his head demanding that he kill the Hasturs.

They realize that a distant tower, Cedestri, is drawing power from the remnants of an ancient matrix in the lake to make laran weapons.

Once in Thendara, Harald realizes he has made a mistake, and seeks assistance from King Carolin to release Dyannis from her engagement.

They both realize that Eduin must have some connection to the old war between King Deslucido and Queen Taniquel Hastur-Acosta, Felicia's mother, but the records are so ambiguous that they are unable to learn anything conclusive.

She initially identifies Eduin and Saravio as preposterous fakes, but her leronis, Callina Mallory persuades the queen that their gifts are real.

Eduin now sows his seeds of discord, claiming that Varzil the Good, working with Cedestri Tower, intends to attack Valeron.

Eduin, realizing that Dyannis will likely be killed in the attack (their relationship is detailed in Zandru's Forge), asks Callina to allow him access to Valeron Tower so that he can warn Hali.

He casts aside his personal demons – both his father and Naotalba – and joins with Dyannis to broadcast to every other tower on Darkover the experience of Hali's death.