Gray's book, The Temple in the Gospel of Mark, was originally published by Mohr-Siebeck. Thankfully, Baker Academic has recently released a more affordable reprint of the title.
The reviewer, Vicki Phillips, does a fine job summarizing the book, offering only positive comments in the conclusion:
"The intertextual work is thoughtful, disciplined, and engaging in providing a rich context for understanding Mark’s use of the temple motif, thereby filling a gap in scholarship."Check out the full review here and secure your copy of Gray's masterful treatment here.