Cirrus@Austlit

'Timothy Martin is a respected lecturer in Astronomy who has spent most of his life trying to put behind him the trauma of a childhood dominated by ‘visions’.

'But the visions have returned, more real than ever. Not only does see other places, but he is now able to step into them. When he becomes fixated on the star Delta Crucis in the Southern Cross constellation, he sees a vision of a world orbiting it and impulsively takes a step  ̶  two hundred and forty-five light years into space. He did not expect to survive. Nor did he expect to land in the midst of an alien city. And he certainly did not expect to threaten the well-being of another world, one that he finds disturbingly  ̶  at peace. At stake is not only his own destiny, but that of an entire world.' (Publication summary)

'Back on Earth after his life-changing encounter with the people of the planet Arboretum, Timothy Martin learns of a developing crisis in the Galaxy. The Shadow is growing and threatens Earth’s nearest populated planet with oppression and malice. Responding to this threat, the Custodians of Arboretum find themselves in mortal danger. Timothy accepts a plea to come to their aid. But will he be able to make a difference? Can an answer be found to combat the Shadow? Will the black sea of Timothy’s inner world thwart his chance to save his friends?'

Source: Publisher's blurb.

'Overcome by the death of his closest friend, Destiny Unsought, Timothy risks all in an abandoned pursuit through the mysterious mountains of Sanctum, the traditional home of the Mighty Ones and the resting place of the dead. There, with no hope of return, he finds the answer to the dark sea of his own soul and the destiny to which he was born. But first he must do what no other had done before him: cross back from death to life.'

Source: Publisher's blurb.